Modules not saving data

Hi,
I am using shopme template, my OC version is 2.0.3.1.
I have logged in today to the admin panel after a long time and found some abnormalities with the admin panel.
Some of my template modules are not saving the data. For example there is a module named "Shopme Product Groups - Group Management" in this module you can assign some products under one group and display where ever you want. When i checked the settings, this module is empty and when i try to add something and save, save successfully, but when i again edit it its again empty. After editing the settings the respective products are also removed from my store front end.
Any person has faced some similar kind of issue with any template or module before, please help me!
Thanks in advance.

Create a new incident request by using the site support link on the Marketplace where you downloaded the extension to contact the extension developer.