I appreciate you for upgrading your subscription to access the insights in the Profit and Loss report, Netology.
The Insights feature in QuickBooks Online is specifically designed to work with the standard (un-customized) Profit and Loss (P&L) report. If you're currently using a customized version of the report, I recommend saving a new bookmark of the un-customized P&L report. This way, you can quickly access it whenever you need to use Insights.
If you need further questions or help, feel free to comment below.