I have a client who wants to integrate her shopify account into her QBO.. However the review on your site are horrendous about the integration.

Yes, we often recommend using other products unless the person is dead set on it.

Thanks for checking in with us, rogerfarrell.

We can connect Shopify to QuickBooks Online (QBO). It allows your client to export their sales and data which includes line items and taxes that are automatically sent in their account.

Also, each app has a different way of integrating with our software. This means the data that is imported into QBO is dependent on what Shopify shares with us. 

We can directly access Shopify within your QBO account or to our App center. I’ll show you how:

1. Go to Apps from your left pane.
2. Under Find Apps, enter "Shopify for QuickBooks Online" in the field.

Then, reach out to their support for further assistance with the integration.

Feel free to visit these links shown below about managing the app:

• Sync your Shopify data with QuickBooks
• Connect Shopify for QuickBooks Online

I also added a link for more insights about running your business in QBO: Help articles. 

That should route you in the right direction. Stay in touch if there's anything else I can help you today. you have a great day ahead.