Infractions to Instagram rules result in an immediate block. It means the profile is restricted in capabilities. It isn't possible to make comments, like follow, or write directly in Direct Messages for any period of duration (from two hours to two weeks). If you're lucky enough to be blocked for a short period, make sure you don't alter your profile. Don't post anywhere. You can rest it for a few days until it's fully restored. Visit How to see who blocked you on Facebook