I have a paper wallet from an ETH atm from 2 years ago. I am trying to sweep the funds onto a digital wallet. I have used multiple ETH wallet apps on my phone but none of them were able to recognize my private key. The public key functions properly and I am able to access it with etherscan.
The ETH atm support I reached out to stated that the blockchain for ETH has changed much in the past 2 years and therefore my keys are outdated. Supposedly it is possible to translate my private key into wallet compatible format. Support said I could get a trusted programmer to do this for me. I'm not sure what to think of this. There seem to be no people with the same issue as me online. Maybe the ETH atm I purchased from uses a proprietary format?
Thank you very much.