App no longer works with older iOS. Unacceptable

Redbox has been going downhill. Kiosks always down and website does not reflect it, etc.
now there app will no longer support older versions of iOS. I have an older phone and Im not about to update the OS just to use this app, the only one that no longer works on my phone. It no love no longer opens and it wont update.

Magicant111111111111 about REDBOX: Rent, Stream & Buy, v5.21