I just clicked on a post from 2022-10 and I can still edit it.
At a guess you need more posts, or receive more likes, or give more likes, or possibly more badges (I have 20+ and you have 8). Your account has been on the system since 2022-12-22 so I do not think that your account needs to be on the system longer (I created my account not very long before yours 2022-09-19).