2 for 1 problems...Moto X & sold phonequestion

Just installed ADroid and ran into two problems....

1. I see an old phone listed as a device that I must have installed the app on. I'm guessing I can't remove that device unless I get my hands on it. This counts as one active device. Not a show stopper but I would think I could simply remove a device.
2. On my PC, I get a message that says my device is not supported now. I'm using a Moto X with Android 4.4.4. Is this correct? If so, I guess it makes #1 above less of an issue!

Thanks

Update:
Problem #1 - remains
Problem #2 - the system took pity on me and now works. No explanation...just many uninstalls, shut down, restarts and re-installs.

@rdy4trvl

1. You can check this guide on how to remove a device from your account: http://forums.airdroid.com/viewtopic.php?f=4&t=15855

2. You mean AirMirror? We've released non-rooted AirMirror support for Android 4.1+, you can check here for more details: [Help & FAQ] Using AirMirror in Non-Rooted Way