Events page header

Hello,

My question is about the event calendar page and all the single events’ header :

I’m using Kallyas theme and i have a very ugly header bar which don’t want to go away on every single vent page + the event calndar page (see here)

Does anyone knows how to hide this header only on the event page and all the single event pages ? (note that i’ve already tried to do so trough the admin but it seems the parameters are overwritten by something)

Here is the website link(still under construction) : website

Thanks in advance

https://ww.wp.xz.cn/plugins/the-events-calendar/