We can’t tell you anything about suspensions from the forum. That’s something that’s handled completely by IFastNet (who provide the underly infrastructure that InfinityFree runs on).
If you go to your dashboard it’ll give you more information, and you should have a banner there.
this article from Admin should help:
Although my guess is either CPU or Hits limit.
are you using something like wordpress with elementor? Elementor is known to be very resource heavy