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>Would it be possible to recover the seed on “myethernet” wallet?
Assuming you mean MyEtherWallet (MEW), then yes, that is one of the many options that would work for this purpose.
>on which I can temporarily recover my 24-word-seed
This makes it sound like you plan to continue to use the seed after you get a new Trezor device. If you choose to recover the seed in a software wallet then you shouldn’t use it again. Instead you should generate a new seed when your new device arrives and transfer all funds from the software wallet to that new wallet.