Show the issue. Provide steps to replicate and screenshots.

Click ed2k link and it no longer auto adds to emule. No screenshot I can think of will show something like that not happening. sorry.

For some reason 122.0 Firefox Release does not allow adding automatically

Links with the format ed2k://url need to be changed to ed2k:url without the two forward slashes ("//") and Chrome will soon be the same (Bug 1876729).

You can revert by changing network.url.useDefaultURI to false in about:config then restart the browser.

The solution proposed by zeroknight worked only up to Firefox version 125. Since then neither the default nor the modified configuration works.