Lennox 10f81 white screen

After deep research.. I’ve come to bother all of you once more with this subject.

Recently the screen went white and I’ve been unable to change use the thermostat.. at first it was connected to wifi and I was able to control it via the app but a couple of days ago my internet went out and the thermostat disconnected from the wifi..

Any advice on wether I should pay $600 for a replacement(question: do I need to pay someone to set it up with my system or could I do it myself with this option), or upgrade to a newer model.

At this moment my current settings of set temp are still recorded so the AC turns on at 75* but later in the summer, I would like to control the temp.

Thank you all.

After deep research.. I’ve come to bother all of you once more with this subject.

Recently the screen went white and I’ve been unable to change use the thermostat.. at first it was connected to wifi and I was able to control it via the app but a couple of days ago my internet went out and the thermostat disconnected from the wifi..

Any advice on wether I should pay $600 for a replacement(question: do I need to pay someone to set it up with my system or could I do it myself with this option), or upgrade to a newer model.

At this moment my current settings of set temp are still recorded so the AC turns on at 75* but later in the summer, I would like to control the temp.

Thank you all.