Since this explorer is database-free, it doesn't natively support address balances & transaction history. However, you can check it in :
https://explorer.taobot.org/address/nu1qm8j56ulm39p0nqjxjq2elg95vspwfd6ytg55py{
"isvalid": true,
"address": "nu1qm8j56ulm39p0nqjxjq2elg95vspwfd6ytg55py",
"scriptPubKey": "0014d9e54d73fb8942f9824690159fa0b46402e4b744",
"isscript": false,
"iswitness": true,
"witness_version": 0,
"witness_program": "d9e54d73fb8942f9824690159fa0b46402e4b744"
}