IE11 compatibility issues

Hey we’re using your plugin on a couple of websites and it’s brilliant! Awesome work.

Just had an email from a client, who couldn’t see the date picker or Google map.
Went through all the browsers and found problem is with IE11.Looked at the console, and there is an error stating:
“conversion from “string” format not allowed on JQuery.multiDatesPicker”
Went through other websites and it looks like it looks like it happens everywhere on IE11.

Any guidance or a fix?

Cheers!