I need help in setting up my existing service at my new residence, that I moved into recently.

SOURCE: magic Jack frequently loses connection even though it should stiil work when offline

To use without computer plug ethernet cord into magicjack otherend into router plug phone in to magicjack plus plug magic jack plus int power adapter plug power adapter into power outlet should work but does not no calls in or out in reverseorder and has to be online with internet conection .

SOURCE: My magic jack plus will not work and I am wondering if the electrical connector is bad.

There is a blue power light on the magicjack plus, near the word "plus". Check for that light.
With your Magicjack plugged into the AC wall socket thru a power module, is the blue light on or off? Try plugging the magicjack directly into a USB port on your computer. Does the power light come on now?
If that light is on when plugged into a USB socket and off when plugged into the AC wall socket thru the power adapter, then the problem is the power adapter had failed.
Power adapter module failure is a common problem with the magicjack.

Solution:
Magicjack is aware of the problem and offers a replacement power supply. To contact them, go to www.magicjack.com and go to "support". They will ship you a new power module for about $5.50. Some people have reported that the replacement modules from Magicjack are no better than the originals and have had repeat failures.
Consider getting a power module from another source. There are lots of AC to USB power converter modules available on Ebay for only a few dollars. Search Ebay for "magicjack power adapter".

SOURCE: How do I renew my Magic Jack service?

Just go to the website and log in with your phone number and password. IF you have not yet signed up on the website do that and then you can renew your service from there.
https://web03.magicjack.com/my/index.html?myfocus=locInfo