A quick script I made to check all the key-servers, Add this to your /usr/bin

add-key.bash

#!/bin/bash

key_servers=("ha.pool.sks-keyservers.net" "hkp://p80.pool.sks-keyservers.net:80" "keyserver.ubuntu.com" "hkp://keyserver.ubuntu.com:80" "pgp.mit.edu")

for key_server in ${key_servers[@]}; do
    echo "[+] Start checking ${key_server}..."
    gpg --keyserver "${key_server}" --recv-keys ${1} && break || echo "[+] Trying new server..."
done