What phone & Streamvision version are you using? Have had issues myself where original Streamvision will no longer load on to my I- Phone 16 or MacBook meaning that I can’t connect my Helion (XQ50F) any more & get same issues when trying to connect to WiFi (no issues with Streamvision 2/ my Thermion DXP & these still work fine).
Contacted Thomas Jacks who were massively helpful in checking the latest firmware for all of my Pulsar products etc & double checking compatibility but sadly they also confirmed that it’s an issue that Pulsar know all about with the latest Apple products (all to do with WAP security) but are yet to address! The only solutions they could offer was that original Streamvision still worked fine on Android if I had one but, as I don’t, the only way that I could download any files was by direct/wired download to laptop as a media file (I.e. not via Streamvidion App). They also pointed out that my older (but still fully functional) devices were at their last known firmware patches but that they are no longer supported/will not receive any further updates.
Yet another case of manufacturers making their older, yet fully functional, products obsolete - anybody would think that they were trying to force you young buy a newer model!!