I purchased some bitcoin today using an ATM from the company BitXatm. I think the model is called Sumo. The machine is located in a café in Zurich, Switzerland. The only option I had was to print out a paper wallet. On it there are two QR codes, one for the private and one for the public key. And then there's also a very long number that says "TID" which starts with #f3...
I then tried to import the paper wallet into my online wallet at blockchain.info using the blockchain mobile app. I followed the instructions from their tutorial and I am sure I did it right, but I repeatedly got an error message saying "transaction failed". I was able to import the public key and see the funds, but not transfer them using the private key.
On my computer I also have Electrum installed, but this wallet doesn't allow me to scan QR codes. In order to import the paper wallet into Electrum I would have to enter the private key, but there is no private key written on the paper wallet in the form of numbers.
I also checked the website of the company that owns the ATM:
https://www.bitcoinsuisse.ch/de/benuetzung/ (in german)
There it says I need to use Mycelium bitcoin wallet to import the paper wallet. But I don't really want to use it because it's only a mobile app and it asks for access to my user profile.
Could it be that this ATM only works with one particular wallet? And what the heck is this "TID"? Doesn't seem like a very useful machine to me ...
I would be grateful to hear from other people who have used this type of ATM or can otherwise help me.