Download Windows Migration Assistant v2.2.0.0 (Mojave) for Mac on Catalina

I am trying to migrate my files from a Windows 10 64bit to a new iMac. I was told to use the Download Windows Migration Assistant v2.2.0.0 (Mojave). My iMac seems to use Catalina.

I got so far as beginning with the transferring. Estimated time 63 hours? This does not seem right. Also the estimated time has not changed throughout the last hour and the process seems to be stuck.