Have you tried uninstall and reinstall? If it stopped working after an update send an error report. Go to Support at the bottom of the members app. Report an error.
You could try wiping the phones cache partition.
Power off your device, and plug into a pc. Simultaneously press and hold the Volume Down + Power buttons, when you see the Samsung logo release buttons. Use the volume buttons to navigate the Recovery Mode menu. Use the power button to select Wipe Cache Partition. Wait for the system cache partition to clear. You can also repair apps while in recovery mode. Also good to download is good guardians in the galaxy store. Run app booster.