I hope MRNG dev will be back, I still believe in this project since 2017. The wallet blockchain is still active but I'm connected only in 1 node, I didn't know if I'll continue support this project or forget it because the dev deletes the MRNG discord server 2 times now and also he's not active since november (not a good sign for a dedicated developer).
The dev also deletes MRNG twitter account for no reason, hoping for update on this.
Good luck till someone from community revive the coin. Eidas tried but left again. The dev is not coming back so start searching for new devs.