If I understand you correctly:
1) You purchased some “script” or plugin from the website CodeCanyon.net
2) The script you purchased from CodeCanyon.net is not working properly
3) You’ve come to WordPress.org for us to help you with this script you purchased from CodeCanyon.net.
Do you see a problem with this scenario?
WordPress support volunteers here at WordPress.org do not have access to the script you purchased. As such we’re unable to install the script and help you solve the problem you’re having.
Please get in touch with the folks you purchased the script from for help. They built and sold the plugin, and they should be in the best position to answer questions about the product you purchased from them and help you use it: https://codecanyon.net/item/tiktok-video-downloader-wordpress/26322762/support
Good luck!
Okey! Thank you so much... I think their is might be some misunderstanding happend with me. Thanks allot.