I use a Widi Master with my Midihub. I pair my Casio PX5S with Midihub using a couple Widi Masters. I don’t do iOS to Widi Master unless it is just briefly to test something. For a reliable connection I would use a Widi Bud Pro attached to the iPad. The Apple bluetooth midi stack has not been as reliable for me as 2 Widi devices working together (I get disconnects occasionally).
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