Would it not be simpler over the long run to upgrade the T7 to a camera that is compatible with a wider range of gear?
You will be fighting this same fight over and over again with the T7. It is a safe bet that well over 90% of T7 users never buy an external flash. I would not be surprised to learn if that figure was over 99%, which could begin to explain why Canon removed the circuitry from their most basic, entry level cameras.
If you wish to get the most performance from flash gear, I suggest that you upgrade the T7, and the leave Rebels behind.
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"The right mouse button is your friend."
