Do not use an exchange address. Some exchanges do not allow newly generated coins as deposits
Then I would use a different exchange. For one, since 2014 Blockchain.com has never had an issue with any of my mining rewards deposits. Considering that some exchanges don't like 'tainted'
BTC I find it rather puzzling that they would take issue with sparkly brand new minted ones...
I would add that I have never had an issue with the new block reward getting to my Coinbase account when I hit a block here as well.