You can do a long tap on the notification, and normally you have the choice to silence it and make it disappear. Perhaps not what you want though.
Or otherwise, don’t you have a way to connect to wifi somewhere, in a cybercafe for example? Or at a friend’s? (just suggestions) It should solve the problem I suppose
a tap on the notification brings me to a silence mode (for a few hours maximum). Or to settings where I cannot set anything cause it says I cannot diable this message.
Sure I could search for a wifi somewhere in a city nearby.
But: A bug is a bug is a bug.
I wish there was an official solution,
cheers,
KEF