The 1st time I sent them in separate 9 x 12 envelopes with 4 forever stamps each (only 3 were needed). After 10 weeks, I sent them again separately via Priority Mail. USPS tracking confirms they were delivered 5/13/2024. It is now 7/8/2024 and IRS website shows they received 2021 but not 2022. When I call IRS I can't get to a live person. Should I send it again Express Overnight, Certified Mail, Return Receipt, Signature Required?
