404 error code with Medalla

Hi, running the Eth2stats client as a DAppNode package and the Prysm beacon chain on the Medalla testnet with the following config parameters:

BEACON_ADDR prysm-medalla-beacon-chain.dappnode:4000
BEACON_METRICS http://prysm-medalla-beacon-chain.dappnode:8080/metrics
BEACON_TYPE prysm

Returns the following error:

time="2020-08-07T08:55:20Z" level=info msg="Could not load config file. Falling back to args. Error: Config File "config" Not Found in "[/]"" module=main
time="2020-08-07T08:55:20Z" level=debug msg="[main] Debug mode"
time="2020-08-07T08:55:20Z" level=info msg="[prysm] setting up beacon client connection"
time="2020-08-07T08:55:20Z" level=info msg="[core] setting up eth2stats server connection"
time="2020-08-07T08:55:20Z" level=debug msg="[core] looking for existing token"
time="2020-08-07T08:55:20Z" level=warning msg="[core] token file not found; will register as new client"
time="2020-08-07T08:55:20Z" level=info msg="[core] getting beacon client version"
time="2020-08-07T08:55:20Z" level=info msg="[core] got beacon client version" version="Prysm/v1.0.0-alpha.19/0d118df0343bf0e268e9fb4f2d5eb60156519c11. Built at: 2020-08-05 14:27:07+00:00"
time="2020-08-07T08:55:20Z" level=info msg="[core] getting beacon client genesis time"
time="2020-08-07T08:55:20Z" level=info msg="[core] got beacon client genesis time" genesisTime=1596546008
time="2020-08-07T08:55:20Z" level=info msg="[core] awaiting connection to eth2stats server"
time="2020-08-07T08:55:21Z" level=error msg="[main] setting up: eth2stats: failed to connect: rpc error: code = Unimplemented desc = Not Found: HTTP status code 404; transport: received the unexpected content-type "text/plain; charset=utf-8""
time="2020-08-07T08:55:33Z" level=info msg="[main] retrying..."