Unfortunately Arturia would appear to have abandoned its iPad apps. Totally unsubstantiated hearsay: I read somewhere the development of the iPad apps was outsourced and Arturia fell out with the developer, consequently the apps basically stagnate, in so far as you can still download the latest versions of the apps already created, but enhancement of those existing apps and the development of any future apps has basically halted.
What might change this fortuitously is Apple's move to M1 processors across their entire Mac and iDevice platform, because as soon as Arturia make a version of V Collection natively compatible with M-series Macs, technically the same apps should also work on iPads with barely any change in the code.