Welcome back, Lukes_mum!
It's great to see your name pop up in community again and I hope QuickBooks Desktop is still working well for your business.
You have great attention to detail, and with what you're describing I'd like someone to take a look at the setup to make sure everything is as it should be. For instance, if the default PST code created by QuickBooks Desktop was deleted and set up again, there may have been an error during the set up process the second time around.
Another thing to consider is your tax codes. You mention HST, for instance. As a combined PST + GST tax code, the two portions of the code will always track to the HST/GST payable account instead of the PST being separated out. Learn more about how sales tax works in QuickBooks Desktop by pressing F1 on your keyboard to bring up the Have a Question? window. Click the Help tab, then the Search button to bring up the search bar. Type in keywords to find related articles. Here's an article from the Government of Canada website about sale tax: Overview of charging and collecting sales tax
One other thing to check before you call in is whether the PST account was accidentally made inactive or deleted. The quickest way to bring up the chart of accounts is to use the shortcut CTRL + A. From there, check the box at the bottom to Include inactive. You can use the search bar to search for the PST account specifically. You can make an account active again by right-clicking on it and choosing Make Account Active. If it was deleted, you'll need to recreate it and then make sure you tax codes are tracking to this new account.
For further troubleshooting, give phone support a call at 1-877-772-9158. Agents are available 24/7 for Pro and Premier users. Enterprise and ProAdvisor users can reach support from Monday to Friday between 9 a.m. and 8 p.m. ET. Here's more about support: Intuit QuickBooks Desktop software support policies
I hope that helps! Have a wonderful weekend. :)
