Do I have to pay and subscribe or is it free... or do I have to wait a while until the fourth day is free?
It becomes free after 2-3 weeks (I guess another week).
That said, do support him if you can. It is completely voluntary and would help him
I wish I could really invite them... because all their work is creativity, but this is forbidden, as I have tried to join many others and any account I open is blocked.