The clicker button has stopped working .It will allow up/down and sideways function but the push in function has stoped all together

Somewhat cryptic instructions from Rhine are available here:

https://fccid.io/CHQ7087T/User-Manual/Users-Manual-637320

You may want to download the PDF for easier reading.
Just for grins, be sure all the little DIP switches still match.

What may have happened is that you've pushed the 'TIMER' button and it's gotten stuck; rock it sideways and see if that fixes the holdup. There might be something under the membrane that is sticking it down, too, but that is less likely.

Manual appears to be saying that you press 'TIMER' and then use the up and down arrows to set a time. Does not indicate that you have to push anything after you have selected an hour value.

Check left button contacts for dirt/debris underneath it.

In Control Panel there is a mouse section, you may have the clicking disabled. if you don't and it still isn't functioning then you have a bad touchpad and it will need to be replaced.

You can also test using a USB mouse to find out if you have clicking disabled.

if its just the stop button on the click wheel dont work try tilting the player sideways and hitting stop or push on the on the stop button on the player harder

where you clock is the buttons next to it, 2 have a line underneath joining to them both, hold them both down together to stop clock flashing, this will then allow your ovens to work, it's a safety feature on these ovens, and to reset clock keep both buttons held in and use the plus and minus button to set hope this helps Donna

The Security+ system is a rolling code system and is digital, so it will work with the Homelink in vehicles and with the remote control units that come with the opener. Also with new remotes that are purchased specifically for that opener. Your "clickers" require specific instructions and you need to use the Smart Learn function in order to use them with this opener. In addition, check the Brand Switch settings to be sure they apply to your opener, and the correct Smart Button color on the opener. Read carefully to determine whether you need to set ANY dip switches at all or can you just set them all to off depending on your opener? Check the instructions carefully. Here's a link to the page where you can download a copy of the Clicker instructions if you don't already have it:
. Clicker Model CLT1D Remote Control Owner Manual

Check all your option, if its a tablet style you might have a function key that allows you to change it. IF you have the drivers disk, try reloading the video drivers or checking for updates on Microsoft and the video card makers web site also. Its worth a shot and doesnt cost anything. Allthough if the laptop has a recovery cd, you could re-install windows all together and see if that works. Has it ever worked correctly or has it always done this from day one?