I have been having regular server outages recently, not dropping for days or anything like that, but 15 minutes here 30 minutes there, maybe once or twice a week, but not every week. The server has been fine for a while, but I do not have the time to deal with it and that server.
The hosting company I use has started to nickle and dime for various services that were free, which is really annoying. I have been a customer for nearly 20 years, I have custom code, that I wrote a long time ago that has been running forever. The services have been rock solid all these years, so it is just a little hard to leave without breaking stuff. Maybe just move everything except the custom stuff.
Bottom line is that the site will become a bite unstable for a day or two, but should be fine shortly after that.