Thanks you @Charles-Tim, for the information, that's where I had my doubts.

thank you @NeuroticFish, I will do that and buy a nano S.
I am really a beginner, and i thought I have done something wrong with the adress and the compatibility with coinbase regarding the adress segwit native and others because I don't understand that.

I anderstant that, thank you for your answers guys.

When I copy paste your code @NeuroticFish on the console, the answer is "false"

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What informations I can give you to check this 4 transactions (2 receive from coinbase and 2 not wanted)

[moderator's note: consecutive posts merged]

ah ok, I will try to verify gpg signature tonight.
But I tried to restore the wallet on 2 different computer and 3 mobil phone, but it is always the same.
I think there is another reason, because I have 3 purchase like that, and all the bitcoin transfer on bc1 adress are not spend since begining of may, i can see it when I create a read wallet with this adress bc1 :

bc1q4tjunthvhp6c6hqun6yylvy0hewqp4fkgpplde
bc1qcgcv84x7q7dj6nqptee9yekhf2nw7dgq74newl

how i can check this address if are not mine ?

Thank you for your reply.
I always used a soft from electrum.org
But I don't know how to verify a signature.
I think the bitcoin are not stollen, because they are always store on this adress  bc1...
I can give you the transaction number of received btc from coinbase and the not wanted transfer :

reveive from coinbase : eebcbf5a8917bdd01b62e91efcf5dce1d90533f5c54a20d2931f7e3c164a8d24
transfer not wanted : 5602e4b208771b8acb484b3c9c54a851666e85f2267621a9e5ee7a710210772a

No, sure nothing. If I create a read wallet with this address bc1q..... I see the bitcoins since the transfer always on this address.
I am a begginer, but I think perhaps it is a probleme with adress sigwit, bech 32 or something like that, or incopatibility between coinbase and electrum.

Hi,
Can you help me please.
I bought bitcoin on coinbase, I transfer this bitcoin to my electrum wallet. I receive the bitcoin but after few hours, electrum transfer all received bitcoin without my autorisation to an unknow adress beginnig with bc1...
For further information, i used electrum version since 2019.
Now i tried to restore my wallet with the last version with my seed, but the balance is always 0.
How I can get my bitcoin back please ?