Issues adding Matter device to Network

Hi,

I just got a Smlight SLZB-MR5U and am trying to set it up on Home Assistant with Ikea Alpstuga air sensor, which is a Matter compatible device.

I followed Smlight’s documentation here: Thread setup (network ... | SMLIGHT Manuals

I’m using OTBR on the device itself and connecting to it from Home Assistant. So option B in the settings.

I tried setting it up with my Pixel 9A running Graphene OS.

[Pic 2] ← Attached in next post to get around attachment limit.
As you can see, the device syncs threads credentials correctly. When I try to add a device, it lets me scan the QR code. But then it gets stuck at “No Wi-Fi connection”. I’ve tried giving Play Services all permissions possible and even disabled WiFi connectivity checks. Still it won’t let me get past this screen.

So I tried an another older phone Redmi A1 running Android 12. With this phone, I can’t seem to sync threads credentials at all and it gets stuck at “Matter is currently unavailable”.

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[Pic 4] ← Attached in next post to get around attachment limit.

I checked logs, but there is nothing important there, both for Matter server and HA container.

Matter server logs:

2026-04-30 15:32:13.639 (MainThread) INFO [matter_server.server.stack] Initializing CHIP/Matter Logging...
2026-04-30 15:32:13.639 (MainThread) INFO [matter_server.server.stack] Initializing CHIP/Matter Controller Stack...
[1777563133.656620][1:1] CHIP:CTL: Setting attestation nonce to random value
[1777563133.656807][1:1] CHIP:CTL: Setting CSR nonce to random value
[1777563133.657580][1:1] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /tmp/chip_kvs
[1777563133.657753][1:1] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_factory.ini
[1777563133.657815][1:1] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_config.ini
[1777563133.657831][1:1] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_counters.ini
[1777563133.675664][1:1] CHIP:DL: Wrote settings to /data/chip_counters.ini
[1777563133.675875][1:1] CHIP:DL: NVS set: chip-counters/reboot-count = 4 (0x4)
[1777563133.676067][1:1] CHIP:DL: Got Ethernet interface: eth0
[1777563133.676170][1:1] CHIP:DL: Found the primary Ethernet interface:eth0
2026-04-30 15:32:13.676 (MainThread) INFO [chip.storage] Initializing persistent storage from file: /data/chip.json
2026-04-30 15:32:13.676 (MainThread) INFO [chip.storage] Loading configuration from /data/chip.json...
[1777563133.676401][1:1] CHIP:DL: Failed to get WiFi interface
[1777563133.676407][1:1] CHIP:DL: Failed to reset WiFi statistic counts
[1777563133.676410][1:1] CHIP:PAF: WiFiPAF: WiFiPAFLayer::Init()
2026-04-30 15:32:13.720 (MainThread) INFO [chip.CertificateAuthority] Loading certificate authorities from storage...
2026-04-30 15:32:13.720 (MainThread) INFO [chip.CertificateAuthority] New CertificateAuthority at index 1
2026-04-30 15:32:13.721 (MainThread) INFO [chip.CertificateAuthority] Loading fabric admins from storage...
2026-04-30 15:32:13.721 (MainThread) INFO [chip.FabricAdmin] New FabricAdmin: FabricId: 0x0000000000000001, VendorId = 0xFFF1
2026-04-30 15:32:13.721 (MainThread) INFO [matter_server.server.stack] CHIP Controller Stack initialized.
2026-04-30 15:32:13.721 (MainThread) INFO [matter_server.server.server] Matter Server initialized
2026-04-30 15:32:13.721 (MainThread) INFO [matter_server.server.server] Using 'None' as primary interface (for link-local addresses)
2026-04-30 15:32:13.721 (MainThread) INFO [matter_server.server.server] Starting the Matter Server...
2026-04-30 15:32:13.723 (MainThread) INFO [matter_server.server.helpers.paa_certificates] Skip fetching certificates (already fetched within the last 24h).
2026-04-30 15:32:13.723 (MainThread) INFO [chip.FabricAdmin] Allocating new controller with CaIndex: 1, FabricId: 0x0000000000000001, NodeId: 0x000000000001B669, CatTags: []
2026-04-30 15:32:13.757 (MainThread) INFO [matter_server.server.vendor_info] Loading vendor info from storage.
2026-04-30 15:32:13.759 (MainThread) INFO [matter_server.server.vendor_info] Loaded 421 vendors from storage.
2026-04-30 15:32:13.759 (MainThread) INFO [matter_server.server.vendor_info] Fetching the latest vendor info from DCL.
2026-04-30 15:32:14.139 (MainThread) INFO [matter_server.server.vendor_info] Fetched 420 vendors from DCL.
2026-04-30 15:32:14.140 (MainThread) INFO [matter_server.server.vendor_info] Saving vendor info to storage.
2026-04-30 15:32:14.141 (MainThread) INFO [matter_server.server.device_controller] Loaded 0 nodes from stored configuration
2026-04-30 15:32:14.143 (MainThread) INFO [matter_server.server.server] Matter Server successfully initialized.

Please advise how I can fix this.

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