Should I have connection problems after upgrading my software ?

Try opening your QBO account on any private/incognito browser.

Hi drclemonsjr,

The randomly disconnecting internet may be caused by issues with your home’s internet connection. 

If your Wi-Fi signal is good, but you’re still experiencing dropping internet, try these fixes:

• Check for modem issues with your ISP
• Check for damaged or poorly configured cables
• Make sure your modem and router have the latest firmware
• Reset your computer’s network settings

Here's how to reset the network settings:

1.  Click the Start button
2. Enter Settings.
3. Select Network and Internet.
4. From the Status tab, select Network Reset.
5. Follow the on-screen instructions to complete the reset.
6. Restart your PC.

I've also added this reference if you need some resources in managing your QuickBooks account: QuickBooks Help Articles.

Keep me posted as to how these steps work on your end. I want to ensure that this gets taken care of.