An alternative server that handles the Paypal ID authentication for GravityBox. Useful for older devices like KitKat where the auth server is now down.
luvit mainNow, it is exposed with port 80. Using AdAway (4.3.6 recommended for legacy support) or traditional /etc/hosts mod, redirect gravitybox.ceco.sk.eu.org to the machine IP address. Then, use YES for the PayPal transaction ID. If you intend to, you can add code on top that actually asks Paypal API to see if the transaction is valid.
gravitybox.ceco.sk.eu.org is no longer up. GravityBox Unlocker is available on Play Store for free, although... Play Store. You'll need GMS to use it.
So, this is just a better solution, especially for those affected by the Google login issue on 4.4 or lower.
This project is not "lets do piracy!!". This is something I've made for personal interest - and from the fact that the project can no longer be paid, even for those who paid for it. (as long as they are not willing to add GMS - which is not privacy friendly at all)