The black soldier fly larvae should be fine for a while. The adults are small and quick and may be hard for your frog to catch after pupation. The larvae have a high calcium level so supplementing them is not advisable. You can over supplement with calcium and that can cause renal issues. Supplementing the canned crickets is fine. Gryllus Linnaeus is a different species than we have available here in the states. We have the house cricket acheta domestics and the banded cricket gryllodes sygillatus. The genus gryllus encompasses field crickets which are considered more aggressive and have higher chitin levels than the species I mentioned. I’m aware that New Zealand and Australia have different regulations than the US so I understand your feeder choices being limited.
As far as wood lice, your frog may simply not have cared for them. It’s nothing to panic about but I’d be inclined not to offer them again. I don’t know which species you have there but here they are generally considered harmless and fine as supplemental feeders. They are even high in calcium due to their exoskeletons being composed of it.
As far as the other feeders you listed I don’t recommend feeding wild caught feeders due to pesticides and parisites. But, and this is a rare exception, if the area is free of pesticides and the frog is wild caught from that same area it would be ok to mimic its natural diet with wild caught feeders. Again this is an exception for wild caught native species. (Technically the green and gold bell is native to Australia but mantains a viable introduced population in New Zealand. The best tip is use discretion. If something seems like a bad idea it probably is. Good luck