Activating a TRON address

Why the explorer says your brand-new address does not exist.

On TRON an address and an account are two different things. The address is derived from your key the moment the wallet is created, and it is valid straight away. The account is a row in the network state, and nothing writes that row until the first transaction arrives. Until it does, the explorer has nothing to show, and no energy can be delegated there.

Nothing is lost in the meantime. The address belongs to your key whether the network has recorded it or not, and the first incoming transaction both creates the account and arrives normally.

What it costs and who pays

Roughly one TRX, burned rather than collected by anyone, and it is charged to the sender of that first transaction. It has to be: the new address has nothing to pay with. Sending a small amount of TRX to the address is the direct way to do it, and a withdrawal from an exchange or a payment from a customer does the same job at their expense. It sits alongside the other charges behind one transfer, and it is the only one of them you pay exactly once.

A new address is expensive twice

The one TRX for the account is the small half. The first USDT to arrive also creates a balance record for that token, and writing a record from scratch is what turns 65,000 energy into 131,000. Burned, that transfer costs — TRX against — TRX for a wallet that has held USDT before. Which of the two you are looking at is decided on how much energy a transfer needs.

What activation does not give you

Resources. An activated wallet with USDT in it still cannot send anything until it has energy or enough TRX to burn. That is a separate problem with a separate answer: sending USDT when the TRX balance is zero.

Order the energy after the first transfer, not before

Delegation needs an account to point at, so the order matters. Let the address receive something first, confirm it exists in an explorer, then rent the energy for the transfer you actually want to make. Doing it the other way round wastes an hour of rental on an address the network is not ready to hear about.

Which first transaction to use

A small amount of TRX from a wallet you control. The quickest route, and it leaves the new address with a little TRX, which is what covers bandwidth later.
A withdrawal from an exchange. The exchange carries the cost, though its own withdrawal fee usually dwarfs it.
A payment from whoever owes you. Also at their expense, and on their schedule rather than yours.

Send a little more TRX than the account record itself needs. An address left with nothing to spare is an address that stalls again on the next thing asking for a fraction of a TRX.

Paying someone whose wallet is brand new

Then you carry both halves. Your transfer writes the account and you pay for that, and the USDT that follows is the expensive case, because a token balance has to be created as well. On one payment it is a rounding error. On a run of payouts to addresses that are all new, it is a line item worth planning for, and renting is where the difference stops mattering.

How to tell whether it is done

Open the address in a TRON explorer. An account that exists shows a creation date, a balance and a resource block. An address the network has never seen shows nothing at all, which reads like an error and is not one. That empty page is the single most common reason people believe a payment has gone missing when it has simply not been sent yet, so read it before assuming the worst, and check the txid of whatever was supposed to arrive.