Invoices disappeared

Hi

Yesterday I did some invoices - I have them on desktop in PDF
opened up today, those have gone…I did not use a back up or anything. The only thing I can think of is I got a new IP address, I think. Well that is the only thing I can think of that is different- not sure how that is related but…? History does not show them ever being done.
Version 21.8.34

Not sure if I should do again or see if something can fix?

Also I opened up computer that I hardly use (and definetly not accounts), where I had as a back up of manager and removed Manager? I did not make the invoices on that laptop. I did not want it there anymore, computers are not linked, only on same WIFI.?

Can you help, how are those related?

It seems, maybe, that I went back to using a custom theme, those ones have disappeared? Trying to understand what might have happened (that might be the case?? - Is this a bug or can you not use different templates in the same reporting period?)

EDIT (theme) - yes that is the issue - made you invoice with custom theme template DOES not save, only template using Standard saved… ??

OMG - I have no idea what is going on… I now see all invoices back> WTF? templates in what ever I used

thanks