JULY 6th UPDATE:
I just called today because it has been over 90 days since I filed my return, as well. Like others in this post, it has been showing as "processing." Thank you TT for providing the shortcut to an agent, as I couldn't find a way before.
The representative told me it was picked up by a department that handles either 1) missing documents on my end, or 2) an "error" on the taxes. He said there was an error on their end, and that department was closed for about 30 days due to the Coronavirus, and that they're just starting to catch up. Because of this, the 90 day window procedures has been extended, and now this department has set August 1st as the deadline to finish processing. He also said there was nothing needed on my end, so to call back by September 1st if I haven't received either my refund or a letter.
I called last week as well but received a little less information. The agent then told me they had just gotten back to work, so to wait til the end of July. I'm led to believe that it can happen any time between now and September, unless a different reason comes up on their end. Hope this information is helpful.
