Update on this one.
I managed to fix it myself after finding the plugin smartapp from Sharptools had not completed its setup and was hanging the loading of the Smartapps but only in IOS … in android the ST app worked.
I had been looking at another dashboard solution as ActionTiles does not appear to being updated and is quite basic and lacking the ability to do more. So I looked st Sharptools (among others) and found Sharptools wasn’t very good either …very old school … but in testing I’d left in the plugin to ST that caused the issue.
So my SmartApp may be fixed but my search for a fully featured dashboard continues.