If the link doesn't work try to use a different application like imgur. You can drag your screenshots from your .Minecraft folder onto the imgur website And it'll make a link for you
Then submit in the map submissions
Instead of using the link given by the Nether star menu in the map maker world go to the PARKOUR channel and follow these screenshots. Click Map Submissions, You can read the “how to submit a map” to find the format. Then click POST THREAD.
