2 Accounts

Yo, so essentially I came back to the website recently to sell my OSRS account, knowing I had an account on the website previously however I couldn't remember which old email I had my account on so I just made a new account:

New account in question: Illustrio

Problem is fast forward 2 weeks I remember which email I used, recover this account and plan to use this account going forward, however afaik having multiple accounts on marketplace forums is "frowned" upon. So this post is just an enquiry to is there an 'expected' protocol for this, like am I meant to delete the other account or am I fine to just not use that account going forward and continue as is.