Ultra Free Prox Max 2.0.4 – Edge, Chrome, Firefox, Desktop App.
Added support ONLY for version r449-2, which is the latest stable version.
It works on Edge, Chrome, and Firefox.

"In this update, login is OPTIONAL."

Tutorial r449-2
1.- Go to the correct link: https://editor.construct.net/r449-2/
2.- It's quite simple; you just have to press F12, then press Control + F5. This will refresh the page.

Using older versions remains the same:

r422, r423, r424: activate the patch and log in. (Works on Edge and Chrome) (Does NOT work on Firefox)
r421 or lower: no login is required, but if you want to use your account, first log in and then activate the patch. (Works on Firefox, Edge, Chrome)

Note:

If you want to use version 432-3, use version 2.0.1 of the crack.

If you want to use version 440, use version 2.0.2 of the crack.

If you want to use version 440-2, use version 2.0.3 of the crack.

:v