SQL Data Size Issue

Hello,
I purchased this plugin a few years ago for my site and it’s worked very well. Recently, I received notifications from my web host (Site Ground) saying that my SQL data size limit has been exceeded. Their tech support to look at my site and informed me that this plugin was the cause of it. Please see below:

“The plugin that is the owner of the files is: meta-data-filter. I am not certain how the plugin is configured but please review it and delete whatever cache you can, or just remove the plugin itself.”

Any ideas how I can reduce the size of the database connected to this plugin?
Thanks in advance for the help