Evenflo Embrace Backwards Buckle.

Evenflo has a GREAT website section on using and installing their carseats. The manufacturer is the final authority on keeping your child safe in their seat: don't accept advice from anyone else!
http://www.evenflo.com/sme_carseats.aspx?id=321

You also ought to have your instruction manual for reference: order it for free, at this link:
https://plweb.evenflo.com/replacement_parts.aspx

The straps are usaully threaded through the back and a large buckle holds them in place, if this is the type you have you just thread the buckle through to the front and then lift starps and thread through to the higher hole. failing this take it back to where you bought it and ask, or if you bought it off the internet take it into your nearest baby item seller and they will be able to show you.

The straps must be undone from a claw on the underside of the car seat so you have to remove the whole thing from the car. The claw is designed to keep the straps in place and this it does very well but its position on the undercarraige leaves no room for your hands and makes it near impossible to manage.

You're trying to unattach the straps from the wrong end....flip the car seat over and on the very bottom there is a little gold clip that pops out and you can push through the hole.

there is a thing on the back that the strap goes through, press up on it while pulling from the front on the straps

https://plweb.evenflo.com/faq_detail.aspx?faqid=4407 the above link is for the manual but here are the instructions. If you have two plastic harness adjusters located on the back of your seat please follow the following steps: On the very bottom of your car seat locate two metal anchors one on each side of the seat, pull the metal anchors out of position and turn them sideways and feed them through to the front of the seat. Release the buckle tongues and chest clip and pull the harness straps to the back of the seat while pushing the chest clips, buckle tongues and harness anchors through to the back of the car seat. NOTE: You may find it easier by pulling down the seat pad when feeding the straps through. All pieces will fit through the harness slots. Choose the appropriate slots for the new harness position. Push the harness anchors, harness straps, buckle tongues and chest clips back through to the front of the seat. Once the straps are completely pulled back through to the front of the seat, make sure the straps are not twisted by clipping the chest clip together and buckling the buckle tongues, then feed the metal anchors through to the bottom of the seat and clip anchors back into place. ********************************************************************* If you have an adjustment strap that is located in between the child?s foot area that allows you to loosen and tighten the straps please follow the following steps: Loosen the harness straps by pressing the harness release button that is located between the child?s legs near the feet area; while pulling on the harness straps from the front of the car seat near the shoulder area. Turn the car seat around and from the back side of the seat follow the straps down to the metal splitter plate, remove the ends of both straps from the metal splitter plate. Once the straps are removed, pull both harness straps completely through to the front of the seat. Choose the appropriate slots for the new harness position and feed both straps through from the front of the seat to the back of the seat. Making sure straps are not twisted; hook each end of the straps back onto the metal splitter plate. Tighten the harness straps by pulling the adjustment strap located on the front the car seat between the child?s legs. NOTE: Final adjustment of If you have an adjustment strap that is located in between the child?s foot area that allows you to loosen and tighten the straps please follow the following steps: Loosen the harness straps by pressing the harness release button that is located between the child?s legs near the feet area; while pulling on the harness straps from the front of the car seat near the shoulder area. Turn the car seat around and from the back side of the seat follow the straps down to the metal splitter plate, remove the ends of both straps from the metal splitter plate. Once the straps are removed, pull both harness straps completely through to the front of the seat. Choose the appropriate slots for the new harness position and feed both straps through from the front of the seat to the back of the seat. Making sure straps are not twisted; hook each end of the straps back onto the metal splitter plate. Tighten the harness straps by pulling the adjustment strap located on the front the car seat between the child?s legs. NOTE: Final adjustment of the harness straps must be completed with the baby in the child restraint.

theres a way in the back of the carset to unhook your straps and feed them thru the higher level. just look inside the back of the carseat.

ON THE BACK OF THE CAR SEAT ARE TWO LATCHES SIMPLY REMOVE ONE BY PUTING THE STRAP THROUGH THE LATCH AND ADJUSTING IT TO YOUR CHILD FIT DO THE SAME TO THE OTHER. LET ME KNOW IF I WAS ANY HELP...

Just in case you don't still have the number; 1-800-233-5921, Monday - Friday from 8 am to 5 pm. I've asked them to send me a manual but i doubt if i can get it before the end of the holidays - here's hoping. :)

https://plweb.evenflo.com/faq_detail.aspx?faqid=4990 Question: How do I care and clean for my PortAbout 3/PortAbout V infant car seat? Answer: To clean pad slide the elastic loops of the seat pad off of the seat shell. Remove the harness system. Cloth pad, canopy, and head support may be machine washed separately cold water, delicate cycle, tumble dry 10-15 minutes, low heat. Wipe straps, buckles, and harness adjusters with warm damp cloth and mild soap. Air dry. NOTE: DO NOT submerge harness assembly in water. To help protect the vehicle upholstery, place a towel beneath and behind the child restraint.