Fiverr Gig Video Thumbnail Issue

[iman_citations]

Hello guys 

kindly anybody can help me 

i created a video for fiverr gig image but when i upload it on fiverr gig that's video thumbnail is not our gig main image

i want to change i fixed many time this video i placed my main image at the start of video but that's method also not working.

at last i got my ranking down now i think i changed many time my gig image that's why my gig ranking is now down i was on first page of my best keywords 

please help me how can i solve this both issues

that is  my gig link:
https://www.fiverr.com/share/pyX3bp

[visualstudios]

You have misspelled words in your video (it's not "benifits").

If you put the image you want at the start of the video, you can then pick that as the video thumbnail. It works fine. Not sure what your problem is.