I think I found the problem, I add this in .htaccess and the problem was solved.

<IfModule mod_substitute.c>
SubstituteMaxLineLength 10M
</IfModule>

Thank you very much!

I disabled all but tagDiv plugins and still doesn’t work.

https://imgur.com/a/94mAaUk

Actually all the theme requirements and the system status is ok: https://imgur.com/a/c2ENojO

And I don’t have any plugin other that the ones the theme install:
https://imgur.com/a/mZPW3si

Please help!

That’s what I did on the first place (https://imgur.com/Zbm83xd) but the new category doesn’t appear on the Discovery Menu. -> https://imgur.com/doijKvz

The strange thing is that it does appear in the cellphone version of the site, but not in the desktop version -> https://imgur.com/TcScrDt

What am I doing wrong?

I did what you told me but it doesn’t work (or did I do something wrong?)

I created the category “Medio Oriente” in the posts menu as a subcategory of Discover -> https://imgur.com/Zbm83xd.

Then I added the category in td-demo-custom-menu. -> https://imgur.com/zH6kruR, but the result is this, the category “Medio Oriente” appears next to the menu and not as part of it -> https://imgur.com/LtyJ3gC.

The I move the category “Medio Oriente” as a submenu of “Discover” in td-demo-custom-menu, as shown here: https://imgur.com/CLNh6Ny, but the result was this: the menu appears above “all” category (it should apper below it and in alphabetical order) and it doesn’t has the look and feel of the other menu items: https://imgur.com/ZPoqfsz

What am I doing wrong?
Plese help.