After you file

This is absurd.  Turbotax help provides instructions how to efile an amended return for Turbotax desktop.  Yet when people try to efile it, it provides an endless error loop saying you need to "Correct your signature date" to 2020. Can someone from turbotax either FIX the erroneous instructions or fix the error that prevents efiling amended returns.  If turbotax officially says that it cant be efiled, Im OK with that, but dont say it can be done and then prevent it in the software.