Cohort analysis conditioned by purchase events

Hi, I want to create a column showing the day cohort when an event happened.

here's a table with all the events I gather from my database:



the 'Nome' column specifies which event happened, the other columns sayy the corresponding day, hour, player involved, date the player registered, etc.

I already have a cohort analysis in a column wich simply works with this:



Dias Cohort = DATEDIFF('Eventos Master'[Data Cadastro],'Eventos Master'[Data],DAY)

But I want one that has the following conditioners:

1. Only count days in which there were purchases

2. Start counting the days the date the player registered (Date created column)

3. only increment once a day (for obvious reasons)

4. cover all actions untill today, or the last action the player made(I have this value in another table)

Can someone help here?

Thanks