For users with the same problem here is the solution
"It’s not possible to log in when Avast (anti-virus software) is running with the current version. Sorry Avast users! To get around this problem you can add Scrolls to Avast’s excluded processes list. Here’s how to do it: open the Avast interface, click Real-Time Shields, then click Web Shield. Open Expert Settings followed by Exclusions. Under Processes to Exclude, click Add, then find your Scrolls.exe. Select it and click OK."