Why the free user limits change so often?

Why the free user limits change so often?

This has been the second time in a week, Zoho has changed its free user limits to my account. First they changed the application number from 10 to 1. Not long, they changed the application sharing user number from unlimited to Zero?

 

I wonder what makes Zoho so inconsistent in their service policy?

 

Can anyone give me a clue?

 

Thanks a lot