What are the best alternatives to 4stats.io? The website is not functioning at the moment.

There are none and the reason is obvious, even in your own picrel - where it states:
>0 users on this site
[ just above the Yotsuba image ]
there is quite simply negligible interest in the service provided by 4stats.io

I've occasionally been using the site for years and I cant recall ever seeing it catering for users on the site reaching into double digits.
Do you SERIOUSLY think that two or more sites would be vying with one another for a share of that pitiful traffic?

>>1534156
...it says zero because the website was broken

>>1534157
This

>>1534052 (OP)
>>1534156
>>1534157
>>1534163
uh oh

>>1534466
uh oh what? The request is for alternatives