In my case the Samsung Account app from the first post showed to be invalid but I downloaded this version (newer) ( i can't post links so delete the space before a dot:
apkmirror . com/apk/samsung-electronics-co-ltd/samsung-account/samsung-account-2-2-03-71-release/samsung-account-2-2-03-71-android-apk-download/
then cleared cache from samsung pass just for safety and restarted device.
It still didn't work fully, (in settings i was logged in but it wasn't syncing and when i tried to download new mods for camera app i was asked to login, so i did, it passed but immidately pushed me back to login window so it was still stuck), but i found out i had blocked Shealth and Svoice apps so i enabled them again, went to camera app, logged in without an issue and was able to download stuff.
Hope it helps
Yeah same happened with me... but there is a workaround for that.... just install es file explorer then open it then allow root then go to system/priv-app/SamsungAccount_Dream/ then delete the apk present there.... Rename the apk you downloaded from this thread to "SamsungAccount_Dream.apk" and copy paste it to folder system/priv-app/SamsungAccount_Dream/ then set the permission to rw-r-r... then Reboot...........
then just install the downloaded apk normally it will install this time without any error... it worked for me :good:
it is for the samsung account apk as i faced error when installing that only... same procedure may work for samsung pass apk too.... just look in system/priv-apps /SamsungPass_1.1 and do the same as above