Instagram blocking my account from uploading?

My secondary account can still upload photos, so I suspect my main one is being blocked for some reason.

I've uploaded no spam or explicit photos. Also, this was the first upload of the day, so I haven't been mass uploading any up till this point.

I only have 300 photos to this account, so I can't believe I'm bumping up against some kind of limit.

I did run into a problem with Facebook blocking my account for 24 hours due to malware supposedly being detected on my tablet. Could this have anything to do with it, since the accounts are linked and FB owns IG?

Thank you.