Uploading New Mods

I bought a mod about a month ago and had it installed it stop working and I asked the vendor to fix it but instead I'm told to reinstall it. I have no idea how to reinstall it. Could some give me easy baby steps on how to install a mod?

Reinstalling a module is never good advice and I am surprised a vendor would tell you to reinstall a module; did the vendor also tell you that you would lose the data associated with that module?

Better to investigate why a module that was working stopped working.  I doubt if the database tables is the issue since that is what uninstalling a module does.  The associated files of the module would not change by uninstalling and then installing the module.

Are you getting database errors with the module?

What is this module?  I probably should have asked that question at the beginning.

Not sure why but I tried uninstalling and installing and same problem. So far I been having so many problems that I never had with  my other 7.1 site.

Its an avatar mod that switches pictures of the members avatar.

If the module is using JS code, then there could be a JS conflict.  You should look in the browser error console to see if there are any issues with JS being reported.

How would I do that?

It depends on the browser.  For FireFox, go to Tools, Web Developer, Browser Console, click on the JS tab.

Im using internet explorer. The same thing also happens when In use my mac