Previous month link not working

Hello,

Apologies for the delayed reply.

What do you have the “Retrieve events from” option set to?

from the beginning of time (0)

Does your calendar contain events in previous months? The previous month navigation link won’t show up if not.

Yes it does. The links do show up, they don’t work after a click for the first time on ‘next month’, see here in action: https://kristinaartgallery.ru/%D0%BA%D0%B0%D0%BB%D0%B5%D0%BD%D0%B4%D0%B0%D1%80%D1%8C-%D0%BC%D0%B5%D1%80%D0%BE%D0%BF%D1%80%D0%B8%D1%8F%D1%82%D0%B8%D0%B9/

Ah, I see.

Your theme is causing two JavaScript errors, which are preventing the navigation from working correctly.

Here are the errors (in Chrome):

Uncaught ReferenceError: PAYPAL is not defined - minicartcall.js:1
Uncaught TypeError: undefined is not a function - scriptcalls.js?ver=3.9.1:111

Fixing these errors should allow the month navigation to work correctly.

Fixed and works like charm now. You are great Ross, thanks!