Hi, we suggest you to backup and reset your device and get back to us with the results. Here are the steps to backup your data:
Backup from Samsung account--Apps > Settings > Cloud > Backup > Select the data > Back up now.
Backup from Google account--Apps > Settings > Backup and reset.
Here are the steps for factory reset, settings>>General management>>Reset>>Factory data reset>>Scroll down to the bottom and tap on Reset>> Delete All.