Looked up for coinjoin and it translates to mean, having multiple users putting in there coins and have it mixed up with the service here being the mixing of several users coin in addresses to get out same value and promote anonymity in the process.

Hence, the service as described in OP is more about, the said platform having to integrate from a centralized means to coinjoin which might run into trouble due to some user's downtime to a more decentralized means of operation where some algorithm will make necessary adjustments for downtimes and continue the process of coinjoin with other available users.

Sure am on track with this…