We have automated systems in place across the board to detect tickets like this which have potentially critical implications, so for critical issues, if you use good wording like you did here, it should flag immediately to us. (I made a write up on how that works if you're curious): How Retool Triages Support Tickets With AI, Allowing Us To Immediately Identify Critical Issues And Incidents
As for your instance being inaccessible, can you confirm if this is for https://trebormfg.retool.com/ ?
Does it reproduce in an incognito window?
May I have permission to log into your org to check this out for myself?
If you open the developer console for your browser, are there any errors in the console, or in the network tab?
Cheers,
Isaac