Lightspeed cache keeps filling up

Please Help.

Im facing an issue that seems to be well documented but despite my attempts its still not solved.

I have a site on digital ocean thats using lightspeed and somethings is causing the js or css cache to fill up to the extent that in about 2 weeks I have 12GB of cache files.

I have attempted to follow the tutorial and doing a diffchecker and adding the common string to the exclude section of the JS/CSS page optimisation. But despite multile attempts I keep facing a locked up site due to droplet running out of space.

My website is https://www.camp5.com

I suspect the cause is one of the following plugins:
WP Notification Bar
Mobile Menu
Popup Maker

Im hoping someone out there can help me.

The page I need help with: [log in to see the link]