Why i can only use the chatGPT a few hours

For the last 2 or 3 days i use the chatGPT for a couple of hours and then i get cut offl . I would expect this on a free account but for something paid i do not . If this is going to be an everyday thing its allmost not worth paying for . ANyOne else haveing a problem with this.
You’ve reached the current usage cap for GPT-4, please try again after 5:57 PM
Thanks for any help