I ran into this weird situation, where:
I backed up my WhatsApp to local storage, inside the
Then I changed my WhatsApp number (to another new SIM)
Format my HTC Phone (HTC One E9+ Dual SIM).
Copy back all WhatsApp folder back to the Internal Storage
Re-install WhatsApp, but, all it asks me is this (below)
Upon "Skip", nothing, no chat restored.
I have already renamed the database file as per Restoring your chat history to
msgstore.db.crypt12 and also kept the same file with the name
msgstore.db.crypt. But, it simply, doesn't even detect it & asks nothing as backup found/restore.