vault empty

I opened Secure Access 2.0 today after not using for a while.

It asked to check for update and then updated.

On opening V3.0 it declares my files are not compatible and need to be upgraded, ok, it tells me to open in 2.0 and make new file.

It seems V2.0 is not on the drive so assume it has deleted V2.0 on upgrade so not able to open.

I download V2.0. and install.

It installs as for the 1st time and prompts for new password which i define the same as the old one.

On opening no files are visible.

I have tried changing index files bit then says data not available.

Please help