http://currency7j63jxm3ap2s6kmrcntrd7zsjgfe3sgt4yb7jmqi5icbsxid.onion/blog/view/565/woocommerce-bitcoin-linux-lightning-integration
Confirmed - order paid, confirmed on the blockchain, does not have a sufficient number of confirmations set in BTCPay tore settings. Complete - order paid, confirmed on the blockchain with a sufficient number of confirmations. Invalid - order paid, did not get a sufficient number of confirmations in a pre-defined time-frame set in BTCPay store settings.