WPMUDev Dashboard is crashing my site

Hi there, I had some sort of trouble today, and now if I activate WPMUDev Dashboard or Defender, I receive this error:

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 377171 bytes) in /home/pproadm/public_html/fabiofava.com/wp-includes/functions.php on line 346

I had WP-Rocket (Cache) Plugin also installed. I've removed every trace of it from .htaccess and every file under /wp-content/cache, but Still can't use my site's Admin.

To make it worse, in some way I've disconnected (I had an API error with WPMUDev Dashboard and there's where everything started to decay).

Now I can't restore Snapshot Backups (despite I have a few ones on my Dropbox and locally on the server. Without WPMUDev Dashboar installed I can acces my Admin Dashboard but I can't install Defender to make it safer again, or recover from Snapshot.

Please help me!