Hi @SQUINTEIRO,
When a request email arrives, you would recieve the request email on the outllok online as below:

If you make a response by click the Approve or Reject as screenshot above, you would make a response from the email and not need to be directed to approval center in flow.Microsoft .com.
However, if you click the Shown original message, you would see the email as screenshot below:

if you click the Approve or Reject, you would be directed to the approval center in flow.Microsoft .com.
Please let me know if your problem could be solved.
Best regards,
Alice