Http error 500

Hello,

we already purchased your plugin, and we are still in the testing period, before the actual using in our webshop. It worked perfectly during the early tests, but today i noticed a problem: when I try to change some settings on our gift card product (the selectable amounts of the gift card), after I hit the refresh button on the product page, a “http error 500” page appears instead of the product page. So it doesn’t save my changes.

I already checked every possibilities about this kind of problem, but it seems the problem is something with the plugin, because i can edit any other product on our website without any problem (any product which doesn’t connected with this plugin). If i try to edit other setting about this gift card product (for example category, product image or tags), this problem doesn’t happens.

I tried to re-make this gift card product, but its not worked.

Any advice for this problem?

Thank you for your help!

Márton