I have read something about invitations and coins but didnt get it. Can someone explain?
I think you mean when EXA and EXD coins combine, the EXD coin becomes extinct, and an invitation card is produced.
Yes, so 1 invitation for the community is produced when EMP 1 is created?
Exactly, this type of invitation has an expiration date, and only the person who has this invitation can join the community.
what is the purpose of such invitations?
At first, the invitation will become a highly reliable link which forms a community based on trust, and person who invited others can introduce the characteristics of Exa Platform to those who newly joined the community and play a role as a guide to help the newly jointed members to adjust.