Hi Venator — thanks for the detailed report and version info. We’ve just shipped an update that improves the reliability of the “Toggle Copy Mode” on Firefox for Android and makes the in-page indicator clearer.

Quick guide to make sure it’s working as intended on Android:

Update to the latest version from the Add-ons store.
Open a normal website page (not internal pages like about:*, addons.mozilla.org, or the New Tab page — Firefox blocks extensions there).
From Menu > Add-ons > Copy Link Text, tap “Enable Copy Mode.”
You should see a small circular control at the bottom-left (extension icon with a subtle ✕). While Copy Mode is on, tap any link to copy its visible text. A “Copied: …” toast will appear.
Tap the circular control to exit Copy Mode.
If the toggle still appears to do nothing:

Check the site isn’t one of the restricted pages listed above.
Ensure the add-on is allowed to run on all sites (Add-ons > Copy Link Text > Permissions).
Refresh the page after enabling Copy Mode and try again.
If it’s still not working on your device, I’d love to troubleshoot. Please share:

A URL where it fails
Whether the bottom-left control appears after tapping “Enable Copy Mode”
Whether any “Copied: …” toast appears when tapping links
You can open an issue on GitHub and I’ll jump on it right away. Thanks again for helping us improve — and if the update fixes it for you, we’d really appreciate an updated rating.