Use correct format
To submit an appeal, you must supply the following information:
- Relevant topic title - not just ‘My ban appeal’. Summarise. E.g ‘Banned by anti-cheat for code 69’.
- In-game name
- Explanation: Why were you banned/infracted? What happened?
- Evidence: Provide evidence where possible/applicable that you are innocent.
- Ban/infraction message: Show the message that shows your ban or infraction details.
Also, you can take screenshots using f8 key after that the screenshots will be located at Documents\GTA San Andreas User Files\SAMP\screens.You can use the PrintScreen button on your keyboard then paste it in paint then save it.
also some image hosting providers like imgur supports direct print screen and pasting.
press PrintScreen > goto imgur.com > click the new post button > press ctrl + v > copy the link to share
alternatively, you can use 1st method if you want to crop or resize your image