I'm sending Push nitifications from PHP using cURl with Firebase Cloud Messaging. But notificatons sending return MismatchSenderId error with correctly server key (from Firebase -> Project -> Settings -> Cloud messaging tab).
Help me, please)
P.S. Sorry, mistackes from ask - English is not my language.)
P.P.S. I can using Google and do it all night. I visited Cloud Messaging Tab in project settings, paste Server Key, API Key and Sender ID to the key=AAXXXXX:XXXXXXX place. All it is doesn't work. I paste not server key - return 401 error. I paste server key - return mismatchsenderid error.