Hub starting slow and login popup is empty, unusable

I've installed the Unity Hub but for reason it starts really slow. It takes about 1+ minute before it even starts and at first I thought this was for checking my system for unity installations, but this behavior is always.

Another issue is that when the hub is finally started, it asks me with 2 buttons to login my existing account or create a Unity ID. (Btw, doesn't this need to be 'an' instead 'a'?) But when I click the button 'log into my existing account' a popup appears without any GUI or content and stays that forever. In this case the hub is completely unusable for me.

My machine runs Windows 10 insider preview build 17063 (most up to date when writing this).

 

Sorry of the late reaction.

Yes I'm able to login on the website and also within unity. Just the hub is acting really strange.

Can I share it trough the forum or PM? Also I recently got weird 'yaml' file errors within my editor.

I've got a license but somehow I recently got an issue where unity said my license was already in use. I fixed that by setting my editor to personal, start it, restart it and remove license and suddenly I had back my plus/pro license again without even filling in the license key. Maybe it's indeed a license issue causing the strange behaviour, but I wonder how this happened.