Filter By Price Infinity option not showing

Hi, I am using the setting of infinity price to show $71 or more, in the same way that the example, see:

0-10,11-20,21-30,31-40,41-50,51-60,61-70,71-i

But the last option, to show $71 or above, is not working on my store:

There is a print of the config
https://snag.gy/9ZEy3J.jpg

There is a print of my store:
https://snag.gy/K57Wzk.jpg

wooCommerce version:
3.4.5

Wordpress Version:
4.9.10

WooF
1.2.2.1

Thanks