Are you using two factor authentication?Please help with the following problem:
I cannot install any add-ons via the "resource manager URL" anymore.
For example I am trying to install
https://xenforo.com/community/resources/banner.2949/
I enter the URL, then click "install or upgrade" at the end of the site, it tries to take the file, but there appears a login error (German Version: Einloggen in XenForo.com ist fehlgeschlagen (English: Login to xenforo.com failed). But my login data are correct.
What can I do?