Didn't work on mobile. Will I missing something?

I have just installed the free version of OnePress Social Locker at this page http://www.rafaelclabrador.com/cambios-en-el-blog/

It works on desktop but it doesn’t work on mobile. Have I done something wrong? Please help me!

Thanks in advance!
Rafa

https://ww.wp.xz.cn/plugins/social-locker/