report Hi,
The theme GK Writer does have support for PHP8. If you encounter errors while using this theme, you can share your error details + site credentials with us and we will check further for you.
NOTE: As GK Writer is our paid theme, we can only provide technical support for the active paid members. It appears that your account does not have an active Gavick membership at the moment so please consider getting a Gavick membership at https://www.gavick.com/sign-up , then we will able to continue with our support in this case.