According to various information found on specific websites, the Spb Wallet application is discontinued for a very long time. There have been other users with similar issues, but unfortunately, there was no way to overcome them.
As I recommended to other as well, LastPast is a known application that can work with all platforms available and besides that it's free and provides strong encryption for everything.
Of course, you can use an APK found through Google, but since you're storing passwords and sensitive data, I wouldn't try installing something off the Play Store.
As for the problem you're having, you will need to downgrade the phone's OS (which could damage it permanently) and use a 3rd party APK file that might be malware infected.