Let's get rid of this error, john3stone.
The error you're getting could be caused by a browser issue where sometimes our customer like you are experiencing this kind of behavior unexpectedly.
Let's try performing some basic troubleshooting steps to better isolate this issue. Click the Reload icon or press CTRL + F5 to refresh QuickBooks.
Aside from using the Reload icon, you can use a different browser like Google Chrome, Mozilla, Microsoft Edge, and Safari. Afterwards, try to set up classes, and let's see if the error won't appear anymore.
I'm adding an article where you can know more about class tracking in QuickBooks Online.
Please give me an update on how things go on your end. I would like to keep an eye on this to make sure that you'll be able to set up classes in your book. Take care! Thanks!
Thanks for reaching out to help! I appreciate it.
Following your protocols:
I reloaded QB in browser Brave; no luck. Same error message (70001).
Then I accessed QB thru browser Google Chrome and reloaded QB; still no luck. Same error message (70001).
If I followed all of your suggestions correctly, have you a next idea?
Thanks for getting back to us, john3stone.
In normal circumstances, the troubleshooting steps provided by Sarahann can help us get rid of the error. Since that's not the case, I'd recommend reaching out to our Customer Care Team. They can pull up your account and further investigate this matter.
We'll be right here if you have additional questions.
Previously I submitted requests for help on this problem via that method (QB Chat) but without success.
My first attempt was assigned QB Case #[removed]; help was promised in 5 Minutes. But I missed the chat pop-up box when it appeared. The chat box came up behind my web browser pages and was hidden from my view. My bad, I suppose.
Making room on my screen to see the chat box when it appeared the next time, I tried again with QB Case #[removed], later QB Case #[removed], and much later QB Case #[removed]. Each time help was promised in 5 minutes but never a response came, at least one that I detected.
If you want me to try again, I will. I really need the help. Please advise. Thanks!
I understand that you've already contacted them,john3stone.
I'd still suggest reaching out again to our Customer Support Team. This needs to be investigated since the steps shared by my colleague doesn't solve the error.
Please check our support hours and types to make sure that someone from our Support Team can assist you. This could be the reason why there's no response when you chatted with them. Aside from chat, you can contact them via phone. Please follow the steps shared by James.
You can always post here if you need more help. QuickBooks Community is open 24/7 to assist you.
Thanks for contacting our Chat Support again, @john3stone.
You can let us know how the conversation goes here on this thread! I appreciate you for taking the time to keep us updated and following our suggestions.
If you have additional questions, don't hesitate and reach back out to the Community. We're always here to help. Wishing you and your company continued success!