One-touch dialing for conference calls not working
I use my iphone for multiple conference calls every day. I have a standard conference call number and PIN that I use for most calls, and send out invites that include the phone number, two commas, and the PIN (999-333-4444,,123456#). To initiate a call all I have to do is tap on the number and it dials me in. It has worked great for years.
Over the past couple of weeks the conference call service has stopped recognizing the PIN#. It says that I have not entered a valid PIN, conference ID, etc. I use Microsoft Teams for conference calling, but this occurs on other dial-ins that are not from Teams. When I manually enter the PIN it works fine.
Others in my firm have encountered the same problem, all with iPhones. It seems as though something has recently changed that has caused one-touch dialing to cease to function. Any advice?
iPhone 12 Pro