I raised a support ticket 24 hours ago, I have latested paid version of emclient.  no one has replied and now i find this problem with javascript is years old.  sadly none of the methods described help me, i cannot sync my google contacts, but the gmail account and folders all come in via imap.  i have tried all the changes with browsers, 2 step verification turned off etc.  nothing works and emclient don’t seem to give a stuff.  i have 2100 contacts i need back in my email program,

my support ticket will soon 48 hours without even being assigned or acknowledged.

I have the same problem … started a new account to see if I could solve the problem and received a reply that the Mozilla firefox browser does not have javascript enabled (firefox changed the way they handle it from v55 onwards)