I have purchased the account, but I have some questions to ask

I do not have permission to send messages in Servers channel. My Servers message dialog displays" You do not have permission to send messages in this channel." I would like to ask you how to get the permission to send messages in Servers. I would really appreciate it if you could tell me the solution.Looking forward to your reply. If it is convenient for you, you can also contact me at my email address. Here is my email address:[email protected].