T-rex and Phoenix Miner both cannot connect to the pool

T-rex says cannot connect to ethash.unmineable.com:3333
and PhoenixMiner keep on saying:

Eth: Connected to ethash pool ethash.unmineable.com:3333 (165.227.214.204)
Eth: Connection closed by the pool

any clue? It has been like that for 10 minutes…
At first I thought would it be normal because if I use unMineable app on Windows 10, then there is 3 to 5 minutes where the “Calculated Hash” is 0 when my Hash rate was showing 53Mh, so I thought it could not connect for 3 - 5 minutes.

Ok, I think I found the solution… the “wallet” for these has to be
SHIB:___wallet____.___worker___
or
DOGE:___wallet____.___worker___

without the SHIB: or DOGE:, it’d just close the connection without telling you why.