[Adding more teams to a custom database - FM 20]

I download Timo Greenland league for fm 2020, I wanted to add more clubs so I doubled the amount of clubs of the league from 30 to 60, but when I test it says that "the minimum and maximum of clubs required are 30 - found 60", and I can't find where I could change it, someone know?

[[FM 19 Editor] "Could not generate enough dates"]

10 minutes ago, Wolf_pd said:

From when untill when is your season and how much games do you have?

Based on that the game calculates if it is going to fit.

June to September

I think I fixed adding 2 days of games per week, but now the following error appears "Error in nation rules: Fixture date in Coca-Cola GM (Monday 1st January 1900) lies outside competition date range June 2018 to September 2018"

I really don't know where this  (Monday 1st January 1900) is.

[[FM 19 Editor] "Could not generate enough dates"]

5 minutes ago, Wolf_pd said:

It usually means you have not enough playing days for the amount of fixtures you have planned.

Sorry for my ignorance, but where I add more playing days?

[[FM 19 Editor] "Could not generate enough dates"]

When I test the edit I did on a patch this is the error that it shows "Error in nation rules: Could not generate enough dates", what should I do?