Why should you have more then one account in eQSL? Because as a portable station you are at different locations. Sometimes you activate a special place like a castle or a nature reserve in the COTA (WCA) and WFF programs. Probabely you like to send your contacts a special designed eQSL. Besides that eQSLs sent to your /P call are not placed in your normal eQSL box.
How to do it? Well I hope I can clearly explain. The first time I made a extra account I made a mistake I can still see at my account list. I can't undo it so I just entered a 1 minute time span at 1st of january 1900 in which I never made a QSO of course. I really don't know what happened exactly but you are not able to delete a account once it is made. I probabely made a error in the date or time and thought I should make another account because of that. If you make the same error, don't make the same mistake. If a date or time is wrong you can correct it at "My profile" inside the new account.
Above you see a list of the accounts made in my eQSL box. Every account has it's own eQSL design and it's own mailbox. If you have your account AG (Authenticity Guaranteed) qualified you can request that for other accounts as well.
When making a new account you just fill in the form that is below the "My Accounts" list. Make shure the call is the one you used like PE4BAS/M - /P or /QRP. Set the time of the activation right and take care about the for us europeans strange format of Month/Day/Year. Of course you need to have the right locator which you can easily find here. A nickname you can choose yourself as long as it is unique. Once you made the account it should show in the list. It could be you made a time or date fault after all. You don't need to make a new account but just log in the new account and alter the "My Profile" configuration. It's important you don't send your log directly from your computers logbook. Better make a ADIF from your activation log and upload it in your new account.
I hope this will help some other radioamateurs. And of course, don't make the same mistakes I made. If there are any questions I would like to read them at the comments. I'll do my best to solve any problems if I can.