Why does my phone stop sending me Chase Android notifications?

I set up my Chase app on my Galaxy S8+ to send me an Android notification whenever money leaves my account. This was working fine up until about 2 or 3 years ago, then it became buggy.

I recently formatted my phone to try to solve this problem so that I’d have a fresh start. The notifications were coming in just fine and I was thrilled! However, just today they’ve stopped coming in when I spend money and I’m not sure why. I don’t remember making any major changes to my phone in the last few days either.

Does anyone have a list of things I could check to figure out why I’m not receiving them anymore? And is anyone else having this problem??