Welcome to the Community!
Thank you for posting your inquiry and the details of what you've tried so far. There are a few different reasons that can cause the WS300 error. Since it came up right after you chose a plan, we should be able to confirm what may be causing this error.
WS504 issue right after asking to acknowledge the 911 differences
never get past that page
I have been dealing with the WS300 issue for more than three months. I get WS300 right after hitting the sign in button.
I'm on the latest IOS/OS, and I've been through the credit check, reset network settings, unpair/pair watch, and change rogers password routines.
I've had 2 tickets escalated and still no resolution.
I requested ticket updates (via chat since calling is pointless) and the response is that it's being worked on. Hard to tell if anything is being done, I have not been contacted by Rogers on either of the tickets.
Any assistance would be appreciated
I've certainly failed activation many many many times, all in the faint hope that one time it will work.
Phantom line? i don't see any other lines on my account other than the ones for which i pay.
Given that i've had two tickets escalated wouldn't the existence of phantom lines have been checked as part of the analysis of the error?
For 3 entire days I have been trying to activate cellular on a series 6 watch. In the watch app, the add cellular tab is greyed out and it displays a message "the rogers account on this iPhone cannot be used to add a cellular plan to <insert name> apple watch".
Repeated calls to Rogers has not resolved this issue. Originally they said it was a credit glitch, after numerous calls and speaking to the credit department who assured me the issue is not with my credit and maintain the error is in their system, more phone calls and after a 2 plus hour call they were finally able to add an apple watch plan to the account but the original message , "the rogers account on this iPhone cannot be used to add a cellular plan to <insert name> apple watch" remains.
Just spent literally another hour plus on the phone with their technical support to have it "escalated again" with no success. Is Rogers simply not able to support cellular on Apple Watches?
iPhone 12 on rogers network, watch series 6 with gps and cellular. both updated using newest software update.
Rogers support finally contacted me. There are no phantom lines on the account. I was asked to restart the phone and try again but as usual got WS300 immediately on signin. Apparently the techs are looking at this again, but to be honest at this point i'll be surprised if the device activates. i had 2 GPS only models before this one and it now looks like i've bought a third.
I see that someone else recently reported activation issues. It does seem like Rogers still does not know how to support these devices.