Thank you for contacting us and I'm sorry about the issue you are experiencing. https://support.msecure.com, this website, is completely separate from our account system or app. I'm not sure I understand the rest of your question here.
You can change your mSecure account password within mSecure 5: https://support.msecure.com/en/support/solutions/articles/36000064490
Yes, that is correct. We have no security concerns with our account system. We monitor our system hourly and patch updates weekly to ensure the most up to date security. Beyond that: