Can't add Exchange account - resolved

First of all, I would like to apologize if the text reads a bit strange. Since English is not my native language and I do not want to trust my vocabulary alone on this topic, I used translation software.

Now to my request:
I want to add my Exchange account in em client 8.2.1687 (bf522f0). It then asks me to log in via the Microsoft website, but when I confirm the code in the Activator app, the whole fun starts all over again, it asks for confirmation again and so it goes on and on without me being able to include the account.

I can’t upgrade to a newer version of em Client because my Mac Pro 3.1 is running Mac OS X High Sierra and I can’t upgrade to Mojave because of an older graphics card.

I would like to thank you in advance for your help.

I was able to solve the problem myself with 2 minutes of reading. I was an idiot and had entered a wrong account on the MS website. Login now works wonderfully.