Which update are you referring to.
We tried disabling all the Ulkit 3 plugins but we still have the same issue when upgrading to php 8.

Hello,
all current Templates and Uikit modules are running well with PHP 8.0 - 8.2.

I dont seem to be able to find a way to fix the issue. I have attached a screenshot of the page as it appears when I select php8. What do you think about this?

Hello, please disable all Joomla cache and clean the cache too
Cache Settings has been changed in PHP 8.
..
And your error message seems not to be a template problem.

Does the template need to be the current joomla 4 version and if so can I pay to get this upgraded as I'm not sure how to upgrade it?

Please see the pre update message I recieved when I went to update the template myself. I havent done it.
The message lists all the extensions. I'm not sure how to update ULKit extensions.

Hello,
Templates and Uikit Modules are compatible with PHP 8. x and Joomla 3 and J4.
You can install the templates and uikit modules in J3 and then update to J4.
..
Ofc you need an active membership to download the newest version