Triggered fatal error, won't reactivate

I think they have update their API as the version of the api is different now. They have just replied in their forum – https://www.nextscripts.com/forums/topic/fatal-error-3/

Have you managed to find a fix for this yet? We are in the same situation and the plugin (latest version) won’t reactivate because of a fatal error.

We have latest PRO Version of SNAP and we are at PHP version 5.6.17 yet received the same Fatal Error rendering the Plug-in inoperable. Is there a fix coming?

This is not a general issue that could be resolved with some fix.

Everyone who has this issue, please open a support ticket https://www.nextscripts.com/support

We will need to take a look at your environment.

I have fixed this issue by commenting this piece of code on line 44 of the file xi.php in the inc-cl directory:

break;

This seem to fix the issue for me while waiting on a real fix from the developer (NextScripts).

Fixed in version 3.5.1. Please update