Slow Loading Time & Safari compatibility issues

Hi, I’ve installed your plugin and inserted it in a page on my website.

I was wondering if there is any change of making it slightly faster? It takes some time for the information to appear, so much that I felt complied to add a little disclaimer at the top of the page where it is inserted warning about just that.

Plus it sometimes does not load at all on Safari (but loads, though slowly on Firefox and Chrome).

Thank you, you can view it here: https://footexp.com/competicoes/