How to fix validation errors (HTML5) with AddThis plugin?

Hello,

I noticed this question was asked 6 days ago. Is this plugin no longer supported? Or is this question not of importance to the author?

@ryankent: If you require assistance then, as per the Forum Welcome, please post your own topic.

@mobilewebexpert: That support page is moved, but the redirected page ( https://support.addthis.com/customer/portal/articles/1365475-attribute-based-configuration#.Ux7wUeeSwoA ) have the information.

Hi srijith.v . That link doesn’t address HTML5 validation. Also, we would have to edit core plugin files?