Hi,
- Only the HikaShop user synchronisation plugin is critical and needs to be kept enabled. The others can be turned off.
- You don't need to worry about these. Joomla just says that it found code which is for old versions of Joomla in them. And that's normal since HikaShop supports Joomla 2.5 and Joomla 4 with the same install package. So of course HikaShop has code for old versions of Joomla all over the place. It's just that this code is only run when HikaShop knows it is on an old version of Joomla, and the system made by joomla to check the extensions doesn't take this into account and thus display wrong information.
- Note that Recaptcha is not included in HikaShop. So you need to manually update it if it's not already done:
www.hikashop.com/marketplace/product/223...-with-recaptcha.html
But even with the latest version of this plugin, you'll still get the warning... You can just ignore it.