Hello @japanou
Here are the responses to your questions:
-What version is used?
Initially, we used Ps 1.6.1.1 then we updated some changes of 1.6.1.23
Are prestashop designed modules OK to add or will they break the hotel?
Prestashop modules may not work on QloApps because we have changed the codes of Prestashop to make QloApps.
We recommend you to use QloApps modules and if you need any module that is not made on QloApps then just let us know we will customize it for you.
When the base prestashop is upgraded, will the hotel core be upgraded too?
Now QloApps has an independent journey and it is a separate piece of software.
What is the upgrade path to hotel? When there are bug fixes how do we upgrade?
Whenever we release a new version we do the announcement on our forum and social media platforms. You can download and install the new version.
But currently, you will have to set up the new version from level zero. But we have an update package in which we update your QloApps without any data loss.
https://store.webkul.com/QloApps-Upgrade-Package.html