Chat gpt stopped following instructions

I got gpt 5. for every instruction, it says, it will start working on the instruction. but even after 1 hour, when I ask for update, it says - it did not start yet. it is so frustrating. i cancelled the subscription. i am simultaneously using gemini, i have not faced that problem. chatgpt is not executing any of my instructions. it simply says it will work on it, but nothing is happening.