You are doing great for your first time (on a forum 😄).
A good point of start is always to provide basic debugging information. Open a terminal window and put
code {
font-family: Consolas,"courier new";
color: crimson;
background-color: rgba(0, 0, 0, 0.2);
padding: 2px;
font-size: 105%;
}
sudo armbianmonitor -u into and paste the output URL here.