Can't get texted 6-digit authentication codes
I changed carriers yesterday from Straight Talk to AT&T. Now, I can't receive texted 6-digit identification codes when I try to use on-line systems (Bank, Postal Service, etc.). I tell it to text me the code to my cell phone, but nothing comes through on my phone. I seem to be able to send/receive texts other than that.
iPhone 15 Pro Max, iOS 18