Hi,
I am having the exact problem as dexcribe above and i am using LOCO translate, has somebody found a solution to this problem ? It is related to the .pot file, i have no issues with translations on other plugins.
for example, this is the info taken from the file info tab in Loco translate (for all languages shown in Mailchimp plugin):
“Missing Template” > “These translations are not linked to a POT file. Sync operations will extract strings directly from source code”
“Sync” does not do anything to the files.
Regards