I have the same error after upgrading to 7.14.2, the devices no longer connect to RMS.
I can see the connection attempts, but they error our with "this device is redirect to the authentication system - status code 20.
They are also at remote sites, so I cannot directly connect to the devices. I will be several days and many hours of driving to got to the remote sites, so this is not desirable or practical.
I tried the SMS option as suggested by Modem works but RMS connections dropped - #5 by Marija , this does force a connection attempt but results in the same error.
Any other suggestions to avoid a long field trip.