Not Recognizing Pro

I purchased the Pro version and it was working initially but it stopped working and I haven’t been able to get it to work for at least the last few days. When I go into the settings under the Pro tab it says:

Status: A network error: transport error: http_request_failed Failed connect to apps.meow.fr:80; Connection timed out

Can you please help?

Thanks

https://ww.wp.xz.cn/plugins/wp-retina-2x/