OK,
Please answer all of the points below:
1. You say you see no coins. Where do you see no coins? At the frontend UIs, or at the admin section (Wallets -> Adapters)?
2. If the coins are listed in the admin section, what is the status of the coins? If there’s any error in the status column, please copy and paste it so I can see.
3. Is your plugin file activated? See the Plugins screen and check your PHP file.
4. What is the exact code you entered in the PHP file? If you show me, I can look at your code to see if there’s any errors.
with regards
P.S. In general, please try to be more specific so I can help you. (see point 3 here). Thank you.