EVČ is an abbreviation for Evidenční číslo (merchant registration number), which is assigned automatically to everyone who registers in our system.
You will find your EVČ in your business account, right on the first tab Information.
Please use it in all communication with us (emails, questions in the online chat and so on). The EVČ allows us to identify the specific entity that has a contract with us and uses the GoPay payment gateway.