Problems with GPT 4o and the new update

So am was working, and i needed gpt for some help, so i went to the website and i saw a message saying new update, and somthing else, so i started, after few day i get a pop us or somthing asking if i want to use gpt 4o, and i click x as i didn’t, and then, i want tpying after 30 or 40 messages i got you can chat until XX:XXpm so i though it might be a glitch, and i even reported it, then asked me if i want to switch to gpt 3-5, and i click as i didn’t want to use the new version, and now am stuch, i don’t even have the option to remove gpt 4o, help me