No, I did not send the $20. The May 31 divi will appear in your account automatically. It's the only one were you DO NOT have to do anything to get it. And it's the only one that will create the squeeze when shorts can't come up with the shares to pay. For the other 2 dividends, you'll have to send a form and $20.
But for that to happen, Don or HVLN MUST send the divi to the TA. Then TA will pass it to DTCC, and DTCC will pass it to the corresponding brokerages with "Real Shares".