Will I lost my ether ?

Hello,

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Last month I decided to start mining ether and also created a wallet on myetherwallet.

I saved my seed phrase and my public address.

Today I wanted to check something on my wallet and I noticed the public key changes everytime I recover my wallet with the seed phrase...

Did I make something wrong ?

My 1st payout will be around 1 ether and will be in 10 days on a public address I can't get back (it seems), will I lost my payout ???

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Thank you to anyone who will help me.