The appeal is just a request for a GM to review the logs, to see if the penalty that was applied was appropriate, and is not meant to provide the details your friend asked for. Cheaters would love for this type of detail to avoid future detection, so sadly it won’t be given.
The penalty could have been late applied for something that happened before the dates noted, sadly there is not much more information that can be provided here, other then to encourage your friend to appeal until support states not further appeals will be accepted.
The number of reports mean very little, one report could cause the same penalty as a number of reports, as long as the Gm reviewing the report and in game logs finds evidence of rule breaking. Though GM staff are human, which is why we currently have the appeals process.