I am using Opera Mail (version 1.0.1044) 32-bit on Windows 8 since more than 2 years.
Antivirus AVG

Since a few weeks, each time when I open Opera Mail, I get message about Security Issue on the screen.
I have 3 accounts to check: a company mail, a Yahoo Mail and a GMail. No security issue message for company mail, but for both Yahoo and GMail.
Security Issue message box has 3 tabs (Warning, Security, Details).
For all 3 tabs Approve, Reject, Help can be used.
Under Security I have a few times ticked the V-box (Remember my choice for this certificate), hoping that it would store, but each time I open Opera Mail I receive the same Security Issue message.
Security Certificate valid until 9/20/2018.

Under Details I can go down to Security Certificates (like in a browser). While first ticking the "Remember my choice .." V-box, I have highlighted several of the options in the Server Certificate Chain (under Yahoo/GMail as well as underAVG).
Maybe not the right one?

Although it is not a serious problem, it is annoying that each time the Approve has to be given.
Looking forward to any suggestions how to solve / where to look to solve this message issue.

Thank you
Gert

Dear "Burnout",

Thanks for your reply with the link. I had searched for Import, and not for Move. Therefore I didn't get the linked article.
I had installed Opera Mail first on the new PC before considering to copy/move the old data onto the indicated location.
So I copied the mail-info into one of the accounts (which I will hardly use).
The problem is that I didn't copy the Roaming folder.
Unfortunately I haven't backed-up the Roaming folder from my old PC.
And this PC has already been formatted.
Any suggestion how to create the file that the particular emails are read by Opera.
I checked in the Roaming folder of Windows 8, and the only file which I seem to be able to change are 3 *.ini-files.
Would uninstalling Opera Mail on Windows 8 PC, and re-installing solve the problem

Thanks, Boongert

My old computer is running Windows XP. As email program I used Thunderbird, but found it becoming very slow.
Having a new computer I wanted to move to another email program. Started with Opera Mail, and I like it.
New PC = Windows 8

Now I want to move over my mails from one PC to the other, I incur a problem.
I installed Opera Mail on the old PC, and used the import function to import all my mail into Opera Mail.
Opera Mail opens, and I have all mails available one account.
I copied the Opera Mail directory (Documents and Settings\User\Local Settings\Application Data\Opera Mail\Opera Mail\mail\store\Account2) to my new PC.
Account2 = associated with Outlook.com (mail I had to open to register the PC)
When I open Opera Mail, the "import" is not becoming available in Account2 (nor in Inbox, Received Mails or any other Tab)
How can I get my mail archive imported?
Boongert