Hi Ajay Matharu,
There is an issue into your plug-in that need to be reviewed and fixed.
When using "Exclude posts" and filtering by category (Selected Categories), if it brings as results more than one page, when you go to click on the next page #2 to see the rest of the filtered results, it clears the filter and goes to regular page 2 with no filter instead of bringing me the result of 2nd page I had filtered with the category I had pick.
I've tried with other browsers such as Chrome, IE9 and FF 3.6 to check if it would be a browser compatibility, but it isn't, so exclude that option.
Please, give it a look as soon as you can.