Pagos - no exp when mobs killed/chain not registering kills

[Rivers23]

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Date & Time:14/8/2108
Frequency: intermittent over the past 30 minutes, happened several times 12 hours ago too
World name: Omega
Character name: Rivers Balduran
Monster name: Pagos Billygoats, Huwasi
Class/Level: MCH, elvl 28
Party or solo: party
In-game time: 2.10pm
Area and coordinates: level 33 Pagos Billygoats and lvl 31 Huwasi

[HaoNam]

If you have an AST then tell them not to use earthly star. You will not get exp when it kills the mob. The skill does not register as a party member.