Add language code in next month url link

Hello

I have an issue with the “next month” url, it doesnt includes the language code in the month view: http://50aniversarioestudioseconomiagalicia.gal/calendario/2017-10/

This causes that events in both languages are displayed. The curious is that when I reload the page it displays the right ones.

There is a way to add the language code in the month url?

Thank you
Awesome plugin

Presenzia

The page I need help with: [log in to see the link]