Export to MP3, incorrect audio. Distorted high, or low

Hello, I have audacity on 3 computers.
Exporting to MP3 on each computer makes it different for me and it doesn’t work for me.

Pc-1 Low power: audacity 2.3.3 exports well, it neither amplifies nor divides the audio, but it does not read aut3
Pc-2 Average power: audacity 3.1.1. Divide by 2 and it is 0.5. can read the aut3.
Pc-3 High power: audacity 3.4.2 increases the volume x2 and remains at 2, out of range and distorts. read the aut3.

Can someone help me with this issue?
What do we have configured wrong?

Thank you

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