Menu Limit / Multi Page Product Categories issue

I am creating a sports shop. I am having a problem when I try and add in new product categories to my Main Menu. Its deleting anything past a certain amount. I will try and explain a little better below.

What I am doing is creating the Main Menu with all the major sports leagues. Currently its like this: Home, MLB, NBA, NFL, NHL Contact Us.

Each League is a Mega Menu with all their teams for each one in them. The customer can select their favorite team and view all the products for it.

I have NFL and MLB done and was working on the NBA but noticed that after adding a few teams to the NBA Mega Menu it started deleting other pages off my main menu, i.e.. Contact Us when I saved it.

It appears to have reached some limit when I add in a new items to the mega menu for NBA and deletes anything past the limit.

Under the WooCommerce Product Categories I have added the main sports Leagues and then all the teams under them. I added the teams to the Mega Menu for each league using the ‘Product Categories’ box.

I need to be able to add in all the teams for each league.

My 2nd problem I noticed is that since I have so many teams when I select the “View All” under the “Product Categories” there are currently 3 pages which will probably be 4 or 5 after adding in the NHL teams.

The first page’s list comes up with some of the teams under the proper main categories but some not. The same happens on page 2 and 3.

With so many different teams for each league, it makes it very hard to select the correct ones to add to the mega menu if they are not listed properly under the right category in the select Product Categories box.

Thanks for any help you can give.