Can't assign co-host in a meeting with some other Limitations on my personal Zoom account

Please kindly help as I can't assign a co-host in a meeting. I logged in to my profile to enable the co-host feature on the web portal but I can't find the option to enable the feature. Now I noticed that I cant find some features on the web portal, and moreover, when I click on some options(like Account Setting) I got this response "No permission. (200)" whereas I am the owner of the account. Clearly, under the account profile, I can see that I am the account owner but I can't make some changes and clicking on some features I got the response that No permission. (200).  What could be the issues? I don't to any organisation or group some I don't have any admin. Could it be because I'm using a free account?