If you do not see the list of models reloading or loading at all when editing the plugin, first make sure that you have selected the correct service and the API key you have entered is correct, and allows for both listing models and running inference (generating content).
If you are sure this information is correct, try clicking the Reload button next to the list of models. This will attempt to override the cache and reload the list of models from scratch.
If this doesn't work, click on to exit the plugin edit page. Then, go to Joomla's , Maintenance, Clear Cache. Select the plg_system_aitiny group, then click on in the toolbar. When the page reloads make sure that the plg_system_aitiny cache group either doesn't appear at all, or it appears and has exactly 0 items; if this is not the case, your Joomla cache is stuck. Now go back to , Manage, Plugins, and edit the System - AI Tiny plugin. AITiny will try to reload the list of models through the API of the AI service you have selected.
If you still do not see a list of models it would appear that AITiny cannot communicate with the AI service you have selected. Please read the “Problems communicating with AI services” troubleshooting page.