My reading is that one party (probably DRC) is yet to formally advise the ICSID that it agrees to suspend arbitration for a month. It will do this at the last minute.
It is likely that AVZ Minerals requested the suspension in order to conclude its behind-the-scenes negotiations with both KoBold and the DRC snakes.
This is a complex three-cornered negotiation, but Felix is in an existential fight. He can't afford to be too cute, or he'll be negotiating with Kabila and M23 next.
Cheers
F