Yes, this is an issue others have come across, but unfortunately we've had no answer as to how to overcome this, aside from if it's a temporary issue try again later, or if using the app as it seems to need constant updates, if this is not done, switch if you can to a laptop / PC and try Chrome that combo seems to work best.
Try from there.
Otherwise all I can assure you of is.... you are not alone !
@blowhairstudio