The reported problems are timeouts and 'unable to charge' errors at adapter, Magic Dock, and ChargePoint/Blink stations; two contributors noted a Supercharger worked.
Some Superchargers timed out; others worked
“On my Bolt some stops worked fine, and Yemassee and Jacksonville kept timing out. The app sometimes said the car wasn't detected.”
6+ ChargePoint/Blink fails; Supercharger and home L2 fine
“In Chattanooga I tried at least 6 ChargePoint and Blink stations and every one gave me "Charging Unsuccessful." Then a Supercharger filled it up in about 30 minutes with no trouble, and home L2 has been fine since.”
Wouldn't charge on L2 or Tesla destination; Supercharger worked
“The apps didn't say anything was wrong, but the car wouldn't charge on their L2 or on the Tesla destination chargers with the adapter. A Supercharger on the way home worked fine.”
Stuck on initiating, then "unable to charge" on two stalls
“It sat on "charging is initiating" with some buzzing for a minute or two, then went to "unable to charge." Same result on two stalls there, so I figured it was the car, but I never found out what.”
Sessions ended after minutes; Bluelink reset helped
“Sessions would end after a few minutes with "Charging completed due to settings" even with the limit at 100%. Hyundai support had me do a hard reset of Bluelink and after that it charged well enough to get me out of a small town.”
Failed at Tesla site and EA; full restart fixed it
“Ioniq 5 here, and the first time it happened to me was at a Tesla site and then an EA, both "charging unsuccessful." I was half convinced it was the ICCU. A full shutdown and restart of the car got it to connect at the next Tesla stop, so that's the first thing I try now before blaming anything.”