explorer.zcha.in unfortunately does not recognize our blocks now because of the order of outputs in our coinbase transaction (founders reward first, miners reward second). You can check our mining address directly to see our blocks/rewards: https://explorer.zcha.in/accounts/t1PbYh7TRXigqcdXYC1YHJS3KSBR9Yeso9W
The number of blocks found corresponds to our network share, we are finding many more blocks than before. Please check the linked address or block history on our website: https://slushpool.com/stats/blocks/?c=zec
All new coins need to be spent to shielded z-address first, it is a protocol requirement.
Hope it clears your doubts. Feel free to ask any further questions.