Sorry for having this issue. There is currently an outage regarding this. Please contact our Technical Support or create a web case for documentation that your service is also affected. This will also let you be notified once outage is clear.
On top of the aforementioned error code you might also see:
Web error 502 bad gateway when clicking join URL Joining from RC app on mobile just spins and never starts meeting Joining by dial-in gives error code 105
i have a class with 125 students O_O ! hahah and everyone is calling me to ask what's going on. First time having this bug, it'S ok i already postpone everyone =) let's hope it get fix.