@Steven can look into it more deeply later-on, to better understand what's triggering it. Till then, I dont think I can promise threat protection wont kick in again.
That said, I can see multiple limitations based on age of the project, and if it's Free, Pro, or Scale.
Not sure if you have Pro, but if not, it might be worth upgrading for a month. It sounds like very shady sales tactic, plus I cannot even guarantee having Pro will fully resolve it... So take this suggestion with a grain of salt, from engineer looking at code, just trying best to minimalize problem possibility, considering your urgency.
Support team is best to resolve this long-term, but that might take a day or few to get 100% resolved