I think (not sure), they are trying to process all past payout issues that are still unresoved in the May payout processing. See example of the recent posts by moderators to April payout topics below:
You can still send a DM if you haven’t already, but support staff will probably not respond until May processing is complete. If you do have an outstanding DM and have received payment, you should mark your DM as solved. You can post a reply saying something like “payment received” and then click the “solution” button at the bottom of the post.