If your email and password are changed on the account then there is no way to recover the account. This company has a very strict policy with recovering accounts and if anything is different then you cannot recover the account. You must have the original email or phone number on the account.
The issue in GetHuman815429's own words
So basically I went on steam workshop for csgo and it said free skins I clicked on the website and logged in and then I got a few emails saying email has changed and the mobile authentication has been Removed
GetHuman815429 did not yet indicate what Steam Software should do to make this right.
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