After updated to WW_user_30.11.51.57 , I found the WhatsApp folder was moved to "Internal storage > Android > media > com.whatsapp "
This is applied to TwinApps also, which is now "Internal storage > TwinApps > Android > media > com.whatsapp "
Since then, I can access the primary WhatsApp folder but not the secondary WhatsApp folder (refer to the attached screenshot).
My question is, can we have permission to access this folder under TwinApps again?