Hi, Griet.

Firstly, I would like to sincerely apologize for the delayed response as we have been experiencing an unusually high number of tickets. I am sorry that it has taken longer than usual to respond to your concern and your patience is highly appreciated.

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First make sure to have this option checked/enabled, in your main Lite plugin settings/

Prevent deleting tables in database.

After this, you have to completely remove your Lite version of the plugin,

and install the full/premium version manually.

Your existing tables and settings will be safe because we enabled that setting from above.

There is no setting to upgrade from Lite to Full,

but you have to download your premium installation from the TMS Store Account,

then follow these steps to install and activate it.

Installation

Let us know how it goes.

Hi, Griet De Groote.

Sorry to hear that. 

If you need to retrieve any lost tables, you can check with your hosting support if they have any backup/previous version of the site that you could revert to before it was deleted,

then try to find the setting, it is the same in both Lite and Premium version of our plugin, as described with the screenshot on the Documentation you saw.

If you try this and still are not able to see that setting, we can take a remote look for you, if you can provide us with Admin credentials.

Just make sure to check reply as PRIVATE, for safety reasons.

We will be here if that is needed. Thank you.