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