I like to think of it like this:

Let's say I have a $20 bill in my wallet. I want to give you $10 and keep $10 for myself. I can't simply cut the $20 bill in half - I must break it down in to two $10 bills, send one to you, and then send the other back to myself. This is the essence of "change addresses". When you spend some bitcoin, you can only spend bitcoin in the discrete chunks in which you received it. Any excess from that chunk you don't sent to the other party will be sent back to you. It is sent to a different unused address in your wallet, rather than back to the exact same address, as it is better for both privacy and security.

The addresses you looked up and found to be empty on block explorers will be addresses you sent coins from. You will see that they have sent coins to wherever you told them to, and they will have also sent some coins to another address - this will be your change address. If you add up the coins in these change addresses, they should match the number of coins that your Trezor wallet says you have available.

In other words, for privacy reasons, when you make a transaction, Trezor automatically generates a new address called a change address and sends the excess coins there instead of sending them to the address from which they were originally sent. The "excess coins" thing might be a bit difficult for you to understand right now. This article should help you get a grasp of it.

As for your problem, unfortunately, it is not possible to see your change addresses in the Trezor web interface. You need to use some third-party software, for example Electrum (source). Alternatively, you can look up the transactions you made in a block explorer and you should see an extra address in the outputs.

Your balance under account is a summary of 3 address you had. Trezor is an HD wallet also, this means if you sent a small test amount, the unspent amount will be sent to change the address also. If you still confusing what address you have the balance, get the XPUB key in your trezor and put it in as a watch-only wallet in a third-party service like blockonomics, it will show your balance under address.

but: (XPUB)
dwyor

I do not know what could have possibly wrong with your Trezor but most likey the fault is that you are getting it wrong. Normally, your txid can be tracked on blockchain explorer which makes your transactions transparent, the bitcoin are on the respective addresses certainly.

Do you have any unconfirmed transactions? Have you only just sent or received something? It might be that...

Other than that, is there no link on the trezor wallet to show transactions in a block explorer (should be in the history/transactions tab).

Binance : virement instantané = 0% de frais (temps mesuré, <5min avec Boursorama) 500€/virement. Tu peux les enchaîner
Binance : carte bleue = 0.9% de frais. Je n'ai pas testé le délai réel. Mais l'argent arrive sur ton compte binance donc une fois le paiement effectué tu as un accès immédiat aux cryptos.

Hmm pas vraiment. Si tu achètes sur une plateforme qui te vends directement les cryptos tu n'auras pas de délai.
Donc pour ne pas les citer kraken ou Binance, qui sont tous les deux bien plus fiables que Paymium si j'en crois ce que j'ai pu lire (et moins chers).

Mais si ça ne te pose pas de soucis de payer 8 % de frais, libre à toi de donner de l'argent aux intermédiaires. Dommage de devoir faire ça pour investir dans une devise dont le but est de faire disparaître ces derniers...

Bah est-ce qu'elle correspond a ton adresse de dépôt bitcoin sur paymium ?

Est-ce qu'elle est flag comme adresse paymium sur un explorateur Blockchain ?

Je ne comprends pas ce que tu veux dire.

Comment ça l'adresse renseignée par Moonpay ?

Ils t'indiquent leur adresse d'envoi ? Ca me semble très étrange.

Tu as une capture d'écran de la fenêtre ? C'est la première fois que tu utilises ce service ?

8 % pour éviter de faire un KYC qui prend 15 min c'est quand même sévère ahahah...