Signal URL

 
When I post my signal URL on Telegram, Whatsapp or a website, it brings up an old picture of the trend and not the latest one. How do I rectify that?
 
Rajiv Ishwar:
When I post my signal URL on Telegram, Whatsapp or a website, it brings up an old picture of the trend and not the latest one. How do I rectify that?

This is a problem of the Telegram, Whatsapp etc. platform, since they keep the first picture was recorded to their servers.