The most common reason the welcome offer has not been automatically added to your account upon the first deposit is that the offer has already been claimed in the past.
This is also mentioned in our terms and conditions for the welcome offer under section 2:
Only one welcome bonus per Swedish personal identity number is allowed. This offer is only valid for new players who make a deposit and are over 18 years of age. You must not have previously created an account at PAF MT Limited (1X2.se, casinoepic.se, casinogami.se or lokefreja.se)