GPT no longer following instructions

I didn’t use chatGPT for a while because of it’s degraded performance which made it unusable. Today I gave it a go and it’s worse than I expected. I put in my custom instructions something like:

When the users types “ABC” then go to this webpage and output this value

It worked fine for months, but today it completely disregarded the instructions. Out of three attempts I got the following results:

  1. It said it cannot browse the web
  2. It outputted the content of a knowledge file
  3. It said it doesn’t know what the command means

Anyone else had similar issues? If yes did you manage to get around it?

I genuinely don’t understand how they managed to destroy their top model in such a spectacular fashion and NOT CARE

UPDATE: I did some tests and other GPTs have the same issue.