1) Closed BiblePay wallet (I am on Windows 10)
2) Made backup of my wallet.dat from  %appdata%\BiblePay
3) Removed BiblePay wallet from my computer
4) Renamed (and didn't remove, just in case anything went wrong) the directory  %appdata%\BiblePay
5) Reinstalled BiblePay wallet
6) Started BiblePay wallet, which recreated the directory  %appdata%\BiblePay
7) Waited to synchronize

 Closed BiblePay wallet
9) Copied my original wallet.dat back to  %appdata%\BiblePay
10) Started again BiblePay wallet
Everything seems to be working now.