Hi Becky,
I’ve resolved my issue but not through any support from Ring, they seemed to have forgotten about it despite telling me they’d pass the issue to their next level support.
Someone on the Facebook ring users group suggested installing Rings “Rapid Ring” application on my phone.
Since I did that (back in late February) I haven’t had to reset the notification settings in my Ring app once.
So for me that was the solution in the end so maybe give it a try.
Cheers, Grahame