Investigator seeking answer to Fraud question

I am an insurance investigator and I have an investigation involving an agent who used Adobe sign for some insurance applications. The Final Audit Report indicates that the agent 'signed' the forms for the applicant with her own email address, the applications were apparently emailed to her personal account from her business.

Which leads to my questions; Are there any scenarios other than the one I mentioned in which the agent email address would show as being the signer?

Also, the actual signature date does not match what the Final Audit report regarding when it was e-signed, what causes this issue?  Thanks!