WARNING!
Be careful when creating paper wallets or addresses with third party sites, like walletgenerator.net or universalwalletgenerator.net.
There have been cases where people sent SPR to the non-compressed public address.
This has fatal consequences since SPR uses compressed public addresses ONLY.
Always send SPR to the compressed public address, or else your SPR are lost forever.
7RGM5x1BR2d6aD3VDSnf47tmW9S5M5P1CzCr6S3eYfScU9jJZw7
...
...
If you want to recover the SPR in your address SQtakqnKGKUZLK5UhRqETkWAZp6P4nZ7UG,
you would need to find a new private key where SQtakqnKGKUZLK5UhRqETkWAZp6P4nZ7UG is the compressed public address , not the uncompressed address.
That's the only way to recover your SPR, but also impossible.
Georgem pardon me for intruding and do forgive me the insolence, I am fully aware of the sensitivities here.
I was messaged by one of the unfortunate souls who, per mistake, sent their SPR to a non-compressed address. As result of how the Helium snapshot/ledger balance transfer was magicked together it looks like anyone who accidentally put their SPR in very cold storage (used the non-compressed address) will be able to use the associated privkey to claim their Helium airdrop coins regardless. Please direct any further questions regarding this to the Helium topic: https://bitcointalksearch.org/topic/annhlm-helium-1809278 or the Slack mentioned in that topic.