Hi guys,
I tried this and find out that the address returned by
console.log(user.attributes.ethAddress)
the result is the string address that looks like my address, but all in lowercase!
what did I do wrong??
PS: this issue seems happened after I updated my server to v.0.0.248 (?)
This is expected behavior, all addresses in moralis are lowercase https://docs.moralis.io/moralis-server/transactions-and-balances/realtime-transactions#address-casing
Ethereum, BSC, Matic and other EVM-based systems have non-case sensitive addresses.
This makes it easier to create queries based on address as it doesn’t require creating a checksum address. Just be sure when comparing an address that comes from outside sources (like MetaMask or Etherscan), to convert it to lowercase first.
Thanks. So how do I get the my correct address ?
Lowercase address is correct.
Casing doesnt matter
Do you mean: When I call a method , for example to check to allowance from that Lowercased address: Will it gives the same result as of from Original address?
yes correct, i would recommend trying this for yourself and reading about how addresses in Ethereum work 
Yeap… I got some errors regarding wrong allowance, thus I thought that was the problem… Thank you.
ok feel free to create another thread about this, will close this one for now