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/nu1qup0czlnfh84wkn8ycyawfla60wqh4mddxpnz70{
"isvalid": true,
"address": "nu1qup0czlnfh84wkn8ycyawfla60wqh4mddxpnz70",
"scriptPubKey": "0014e05f817e69b9eaeb4ce4c13ae4ffba7b817aedad",
"isscript": false,
"iswitness": true,
"witness_version": 0,
"witness_program": "e05f817e69b9eaeb4ce4c13ae4ffba7b817aedad"
}