Under "About this extension" here on this page, you need to add if it's compatible with popular security/privacy addons (like uBlock, NoScript &Ghostery etc) and maybe mention general type of addon which might conflict(functionality/performance) with ClearURLs.
Great addon! The only thing missing that it could really use is the ability to whitelist -- whitelist by domain, or even better, whitelist by any part of a URL that's seen.
As an example, the Skip-Redirect addon does this, and it works well (I'm not advertising that addon; they're different addons that serve different purposes). Otherwise, you have to disable this addon's functionality altogether when a certain site isn't working.
What would also be great is if there was a notification or popup that could appear when stripping occurs. Skip-Redirect also does this and it's helpful to know, since sometimes functionality on a site breaks and it can be confusing what caused it (the website itself, uBlock Origin, Skip-Redirect, other addons, etc).
Thanks for your positive feedback. You can see a little orange badged at the top right corner from the ClearURLs icon, that increases with every action ClearURLs takes for the current URL in the active tab.
Great pro-privacy plugin. One issue I found (couldn't find a place to report the bug) is that it breaks the forwarding for email links generated by the Twitter news aggregator nuzzel.com; a manual whitelist feature would be a great way to deal with edge cases like that. *EDIT - above issue seems fixed; but whitelist feature would still be great.*
Can you please describe your problem in more details. The best way to do this is to open an issue at the gitlab page of ClearURLs or email me to email@example.com and please add the log to your report.