Had the same problem, got a reply from small giant
"…Thank you for your message.
We have some good news and some bad news. The good news is that we were still able to bring back the support for iOS 7 in version 1.9.2. We have already submitted this fix and as soon as Apple approves it, it will be available for all iOS 7 users.
The bad news is that this is only a temporary fix, and unfortunately we will be forced to drop the support for iOS 7 starting from version 1.10. We’d love to keep supporting older devices, but unfortunately some of the 3rd party libraries we depend on have decided to drop the support for iOS 7. This change mostly affects iPhone 4 users, because Apple has stopped providing iOS updates for those devices since 2016.
We realize that this is a disappointment for the (small amount of) users affected, and I sincerely apologise for the inconvenience.
Small Giant Games…”