I am a paying ChatGPT customer for months now. It all worked well for a while, but now I get the " Oops! Our systems are a bit busy at the moment" when I log in online, almost every other day.
I do have some sympathy for the fact that the technology is new and is actively being developed, but at EUR 20 a month it should be more reliable.
Please give your paying customers a bit more priority in your development process!