Subscription and pokemon X/Y y ORAS

Yes, tester access is currently for donors. Tester access is a donation perk before a game server is ready to go public.

When a game server is ready it will be public for everyone.

There is no functional difference between Tier 2 (Super Mario) and Tier 3 (Mega Mushroom) except the amount of money donated per month.

Correct. The donation does auto-renew, but if you cancel before you auto-renew, the perks are lost immediately.

Note that when you donate, your 3DS Friend Code sill has to be manually whitelisted on this thread:

Can you try this:

  1. Open Universal Updater
  2. Search “luma” and download the Luma3ds “boot.firm”
  3. Still in Universal Updater, also search “Nimbus” and re-install it (no need to uninstall first)
  4. reboot console
  5. Open Nimbus and press Start to finish the Nimbus update process
  6. Open Nimbus and click Pretendo
  7. Try opening the NNID settings now on Pretendo to sign into your PNID.