Alot of coins returned 0 rewards for all blocks in the past 60-80 minutes on different algos: blake2s, blakecoin, c11, equihash, keccak, lyra2v2, neoscrypt, skein, x17, xevan

Any explanation?

Haven't paid attention to this previously but if this is happening regularly no wonder that the MiningPoolHub daily income prediction and the actual income don't match. As I said a few days ago, I'm earning about 1/3 of the expected income. BTC's price has nothing to do with it, it's calculated by what the API is reporting and multiplied with my speeds.