Donate button

[mellodycz]

Hello,

does anyone same problem like me?

I tried to make new button, but I'm not able to put there my logo. I fill in the form with URL of logo, but it shows me this:

This URL isn't secure. Make sure it starts with https and try again. 

It's nonsence because my url is https:\\www.dubowski.cz\dubowski_nakladatelstvi_logo.png

Does anyone know where is the problem?

Btw. I made one button aprox. one month ago, with same url and everything was OK.