Blank site after clicking ‘update database connection’

My site is blank. After clicking in the option that said ‘update database connection’ or something like that, it redirected me to a wordpress page that asked me to create a new user, after that mi wordpress site was empty, as if I deleted it. I have my snapshots on gcp, but I’m not sure what is going on. Please help!!

The page I need help with: [log in to see the link]