Hi there, @Pairfum-London, we haven’t received any reports of the issues you are experiencing. While I appreciate your initial troubleshooting efforts, I also recommend logging into QBO using other supported browsers such as Chrome, Edge, or Safari for Mac.
In today's digital landscape, marked by frequent data breaches and security threats, implementing robust authentication methods during the login process is crucial for protecting sensitive financial information and user identities in QuickBooks. Something else to consider, each browser can have its own unique set of bugs or issues. If a problem seems isolated to a specific browser, switching to a different one can help circumvent these issues in QBO.
If the issue persists, I recommend contacting our QuickBooks Live Support team for a detailed review of your account regarding this critical matter. They have advanced tools to assist you in a secure session by utilizing this chat link: https://quickbooks.intuit.com/learn-support/en-uk/contact. From there, select your product, specific edition, and enter your concern. Then click Continue to connect with an expert.
Please refer to this article for more details about our live support hours: Get help with QuickBooks products and services.
To learn more about how some factors affect QBO's performance, check out this article: Why is my QuickBooks Online slow?
If you're still experiencing issues in QuickBooks, please contact us by clicking the Reply button below.