How to send GIF to users in viber from chatbot

I have Viber bot and I try to send GIF to my users. The documentation said that:

Max size 1 MB. Only JPEG format is supported. Other image formats as well as animated GIFs can be sent as URL messages or file messages

When I use file messages - users with iOS can't see the file but android sees the file and can download it but they can't see GIF at the chat window. When I use URL messages - android users see URL but iOS see GIF...

Maybe someone found a solution