Also same thing with cpuminer. Blocks were mined and accepted but my balance hasn't been updated yet on the wallet, I don't know why
I used the following command line to run cpuminer:
Sorry, I do not code yet. If you did generated an address before you actually started to mine, thing this new Core version
does not provide like previous ones when you install the wallet, I cannot help you.
All I know is that, contrarily to older ones like Om (launched in 2016), it is now better, if not mandatory, to be mined in pools.
Maybe ask to someone there.
Friendly: David.