22 trojans, ouch. And it's infected at least 2 other sites. Can see why Google put up a warning.
Look at line 99 of your source code. Google "1Aqapkrv'02v" and you'll find other people with a similar problem.
One of them was on this support forum 3 weeks ago and has said about how he fixed it - https://wordpress.org/support/topic/wordfence-not-seeing-javascript-hack?replies=6
Agreed, definitely never give anyone on this forum your FTP or any other passwords!