[Resuelto] Plugin is crashing site

Background of the issue:
I am trying to log in to the backend of my site enlace oculto. I received a critical error message and logged in under recovery mode. WPML can't be activated, and reinstalling it doesn't work either.

Symptoms:
Es gab einen kritischen Fehler auf deiner Website. Bitte überprüfe den Posteingang deiner Website-Administrator-E-Mail-Adresse für weitere Anweisungen.

Questions:
Why is WPML causing a critical error on my site?
How can I successfully activate WPML after logging in under recovery mode?
What steps should I take if reinstalling WPML doesn't resolve the issue?