The Merit wallet does not see my GPU, Nvidia 1060 - it tell me "You do not have any GPU device yet" even though of course I have - I don't know why, didn't see any help or tutorial which would help me understand how the wallet should start seeing my GPU. Therefore only CPU mining possible and even though I have a powerful 8-core i7 processor, one day of CPU mining didn't produce a single Merit, but of course it wasted a lot of electricity.
But anyway, what supposedly makes Merit a different coin is its (on paper) brilliant Proof of Growth concept, but if in the real world that does not work at all (for sure it doesn't for me and the few friends which I have involved) than all the special and unique value of this coin is just a delusion.
Have you tried this procedure?
https://merit.disifi.com/wiki/unavailable-gpus1. Update your graphics drivers
2. Save and record your 12 word passphrase somewhere safe
3. Click on "Settings" in the left hand menu of the wallet
4. MAKE SURE YOU HAVE COMPLETED STEP 2. Click on the red button at the bottom to "Clear data and logout".
5. Reload your wallet using your 12 word passphrase
6. Happy mining!