Hello
Thank you for your query. You can update the template now, no problem. It is compatible with Joomla 4.
You can update the template in the following ways:
You can manually reinstall new template using a new package.
The second option can be done from Extensions: Update but request from you filling two fields License Key and email in template "Update Settings" tab.
You can download the latest version of Hope from the link below and manually install it:
https://www.joomshaper.com/downloads/template/hope
Also, kindly check the documentation below for more details:
https://www.joomshaper.com/documentation/joomla-templates/hope/template-update