Downlink URL 502 error API + Tago + Meshed

This is for the Tago integration on TTN. Tago support mentioned:

Blockquote
I just did a quick investigation on your integration with TTN. It seems that any request being made to the downlink url of your device it’s reporting Error 502: Bad Gateway… I would recommend you to check with TTN why this is happening, as it seems a very specific error on your device only.

That’s everything I got before reaching out on the forum.

Sorry for the miscommunication. I meant that I saw other forum posts mentioning downlink URLs and the format was different to what I’m seeing. Example 1, Example 2. I haven’t been able to confirm the format of the Meshed downlink URL.

My URL
https://integrations.thethings.meshed.com.au/tago/api/v2/down/[APP NAME]/[KEY NAME]?key=ttn-account-v2.keyredacted

Example URL
https://integrations.thethingsnetwork.org/ttn-asia-se/api/v2/down/[APP NAME]/[KEY NAME]?key=ttn-account-v2.keyredacted

Thanks