t2bot.io hosts a Discord bridge and to my knowledge it is officially allowed by Discord (else they could not have more than 100+ bridge users).
So I imagine there might be the possibility of it being allowed for Beeper as well.
So I imagine there might be the possibility of it being allowed for Beeper as well.
The broader question of whether bridges are allowed seems to be broadly yes as there are many other bridges out there for Discord (IRC/slack ones) and those haven't been shut down either.
I think so long as you aren't abusive, Discord don't care.