Hi Bogdan,
Following the release of Joomla 5.3.0, we have updated the Quickstart package of the templates to include the latest Joomla version. We’ve tested templates with Joomla 5.3.0 and found no issues, which is why only the Quickstart package was updated.
If you experience any issues using templates with this Joomla version, feel free to reach out — we’re happy to help.
Best regards