Edge Node sync failing for WFM availability updates

Why does this setting in our BYOC Edge configuration cause a 502 Bad Gateway when syncing real-time agent availability from WFM? Our Chicago team relies on instant shift swap updates, but the local edge node drops the connection to the Genesys Cloud API every time a swap is confirmed. Referencing Edge Connectivity Docs, the timeout values seem standard. Any insights on tuning the retry logic for high-frequency WFM events?