I paid rent in Ontario for a basement suite. Would it qualify for the Ontario Energy and Property Tax Credit

The Ontario Energy and Property Tax Credit (OEPTC) is part of the Ontario Trillium Benefits (OTB). Assuming you meet all the other requirements, paying rent would qualify you for the OEPTC.

For more information on qualifying for OTB, see: https://www.canada.ca/en/revenue-agency/services/child-family-benefits/provincial-territorial-progra... 

I paid rent in a basement suite in Toronto do not understand the government page. What I qualify for the Ontario energy and property tax credit

Yes, paying rent would qualify you for the OEPTC. But you still need to meet the income threshold. In your case, just apply, and the software will work the rest of it out for you.