Glad you got is sorted out so quickly. One thing I didn't mention explicitly: The limits comes from hosting. If you look after the hosting there is also no (artificial) limits to those numbers.
Background: Moodle is GPL licensed, GPL 3 to be specific, with its four freedoms. Read https://docs.moodle.org/dev/License (and enjoy its creator's talks on-line, if you are not too politically sensitive ;) ).