Migration is a one-way trip. You can only sell your N3 on an exchange for some other coin, transfer that to another exchange where you can sell it to buy legacy Neo. But why w...
Are you on the latest version of Neon (v2.9.3)? Older versions will have issues for certain addresses. It's possible you might not even have any unclaimed GAS which could be t...
Transfer N3 NEO to an exchange that supports it, trade it for a stable coin, then transfer that to another exchange where you can trade that for legacy NEO maybe?
Is the ONTO-Data-Wallet/ONTO Github repository still the right place to post an issue with ONTO iOS 4.0.3 ? All the source code was deleted from there.
You're saying the same N3 address in the wallet displays the balance but neither of the N3 explorers do? That is odd.