So, I sent out about 5 to myself and only minted once. Are we going to get those mints in the future for what we spent?
He was probably lucky to send these transactions with that fee under 1 gwei or have done that before the whole "overloaded" period of ETH network.
Sure, but that doesn't answer my question. Is this minting like a random chance based thing?
Minting is just away to receive your due interests. Interest rate for first year is 100%. Meaning if you had 365 PoS you are due exactly 1 PoS per day. After few days you execute mint and receive them in a wallet. Always send 0 PoS to yourself when minting.
So, minting should better be called invoicing? You need to collect your interest rate manually, it's not delivered to you. It's like you need to send the blockchain an invoice to get your interest rate of 100% a year.
Exactly you need to mint every time you have got opportunity - minimum coinage after 3 days, maximum coinage 90 days.
There was an announcement about POS 2.0 which may fixed many problems but dev decided to finish lending platform before that.