dyzio requires the YouTube channel to be in the channel ID format.
How to find the channel ID?
Go to your influencer's channel, this may be in the user form of the URL e.g. https://www.youtube.com/user/MoreZoella
click on any video in the channel
click on the link back to the channel (in the green box) from the video page
4. Copy the channel URL from the browser bar
5. Paste this URL into dyzio.
6. dyzio will find the channel and add the subscriber count.
You can use this website where you paste in the channel URL and it gives you the channel ID back.
