UPDATE - For lost in mail ....
If 4 weeks have passed from the mail date ...
I was able to speak with an IRS rep. Call [phone number removed], mute your phone, when the system asks for language preference, don't reply, wait... you will either be dropped or in the holding que. I waited 45 mins for a real live rep, not bad....The rep put a trace on the mailed ck, I was told either a check or paperwork would arrive in 6 weeks. 3 weeks into the wait, I went to "get my pmt" portal, and instead of the May 4 mail date, it now stated I qualified for the pmt and I was able to enter direct deposit info. Its my "guess" the tracer showed as uncashed and the system has a manual over ride for accepting dd info in certain scenarios.
