Can support reset my iPad if I proved model and serial numbers of my device?

If it's disabled or unavailable, you're supposed to restore it yourself; there isn't a way for you or them to retrieve the data on it.

If it's activation-locked, you'll need to sign into the Apple ID involved, or contact the person you can, or if you're its original owner, supply Apple with its purchase receipt.

If you can't log into your own Apple ID, that's a separate issue.

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Hello,

The serial number won't help in the reset proccess. You can learn more about what to do here. If you forgot your iPad passcode - Apple Support Thanks for reaching out! -Drake