Issues after replacing Motherboard - ADE

Hey guys,

ADE worked perfectly well on both my phone and laptop until recentlz.
Four days ago, my laptop broke and I had to replace the motherboard. No drama, I still was able to read my ebooks on my phone. Now that my laptop is back from repair, I tried to open ADE and read my ebook on the laptop, but that didn't work. Additionally, I cannot read them on my phone now either.

I cannot delete the authorization ( the box is highlighted in grey). Also, and this is funny, I cannot click on authorize. Well, I can, it is not highlighted in grey, but if I click it nothing is happening. So basically I can't do anything.

My Adobe ID is all fine, I already de- and reinstalled ADE, I just don't know what to do.

I would really appreciate your help!

best
Theo