Can't get any multicast over Wireguard Server tunnel in asuswrt no matter what

[privacyguy123]

I've posted on all respective Githubs - tried igmpproxy, smcroute and now found pim which doesn't work either.

I want to my devices that tunnel into the router via asuswrt WireGuard Server to be able to control remote control devices in the LAN such as Airplay or Tidal Connect. They don't see any receivers when tunneled in yet can access the router admin panel and AdGuard Home admin panel. 224.0.0.0/4 is added to AllowedIPs in the server.

Here's the kind of output I'm seeing:

Candidate Rendezvous-Point Set ===============================================
RP address       Incoming  Group Prefix        Priority  Holdtime
---------------  --------  ------------------  --------  ---------------------
192.168.50.1     4         224/4               1         65535
169.254.0.1      0         232/8               1         65535
------------------------------------------------------------------------------
Current BSR address: 192.168.50.1

10:25:53.078 Received IGMP v2 Membership Report from 192.168.50.63 to 224.0.0.251
10:25:53.078 accept_group_report(): igmp_src 192.168.50.63 ssm_src 224.0.0.251 group 224.0.0.251 report_type 22
10:25:53.078 accept_group_report(): al_pv=3
10:25:53.078 Change IGMP compatibility mode to v2 for group 224.0.0.251
10:25:53.078 Set delete timer for group: 224.0.0.251
10:25:53.078 Not creating routing entry for LAN scoped group 224.0.0.251
10:25:53.680 Cache miss, src 192.168.50.71, dst 239.255.255.250, iif 1
10:25:53.680 create group entry, group 239.255.255.250
10:25:53.680 create source entry, source 192.168.50.71
10:25:53.680 move_kernel_cache: SG
10:25:54.340 Received IGMP v2 Membership Report from 192.168.50.71 to 239.255.255.250
10:25:54.340 accept_group_report(): igmp_src 192.168.50.71 ssm_src 239.255.255.250 group 239.255.255.250 report_type 22
10:25:54.340 accept_group_report(): al_pv=2
10:25:54.340 Set delete timer for group: 239.255.255.250
10:25:54.340 Adding vif 1 for group 239.255.255.250
10:25:55.184 Received IGMP v3 Membership Report from 192.168.50.100 to 224.0.0.22
10:25:55.184 accept_membership_report(): IGMP v3 report, 32 bytes, from 192.168.50.100 to 224.0.0.22 with 3 group records.
10:25:55.184 accept_group_report(): igmp_src 192.168.50.100 ssm_src 0.0.0.0 group 239.192.0.199 report_type 34
10:25:55.184 Set delete timer for group: 239.192.0.199
10:25:55.184 SM group order from  192.168.50.100 (*,239.192.0.199)
10:25:55.184 create group entry, group 239.192.0.199
10:25:55.184 Adding vif 1 for group 239.192.0.199
10:25:55.184 accept_group_report(): igmp_src 192.168.50.100 ssm_src 0.0.0.0 group 224.0.0.199 report_type 34
10:25:55.184 Set delete timer for group: 224.0.0.199
10:25:55.184 SM group order from  192.168.50.100 (*,224.0.0.199)
10:25:55.184 Not creating routing entry for LAN scoped group 224.0.0.199
10:25:55.184 accept_group_report(): igmp_src 192.168.50.100 ssm_src 0.0.0.0 group 224.0.0.251 report_type 34
10:25:55.184 Set delete timer for group: 224.0.0.251
10:25:55.184 Not creating routing entry for LAN scoped group 224.0.0.251