Please help- new "custom" features not available

I have a year old free glide account and I started building again while taking classes to refresh my skills. However, I noticed that the custom features such as custom screen in navigation, custom components such as profile or custom style option in the layout editor are not available on my account…Am I missing an update to my glide account or does the account updatee automatically? How can I access these custom features on my glide account? Please help

Where did you see these “custom” options? Do you have any screenshots?