Hi,
There aren’t any limitations on how many orders can be tracked. So if tracking is only working for the first few orders, then you might want to run through a set of troubleshooting steps to find out what could be preventing the orders from being tracked.
I’d suggest checking the following:
– Make sure you aren’t testing the tracking while logged in as an administrator (this won’t be tracked)
– Use a payment gateway that redirects to the thank you page as the final step. If not the order payment won’t be tracked.
– Troubleshoot your site using the Google Tag Manager extension for Chrome. You can enable it to record on your site to see if there are any duplicate issues or other issues reported. If there are any you can take a look at the details to see what might need to be resolved. You can also check to make sure it’s sending unique order details especially a unique order number.
– Check for filters in your Google Analytics settings. Make sure there aren’t any filters setup, either for your account or the view, as this could prevent some of the tracked data from showing up. The following documentation can be helpful to understand more about filters: https://support.google.com/analytics/answer/1034823?hl=en