[تم الحل] Switch WPML’s Automatic Translation to pay-as-you-go

Background of the issue:
I would like to switch WPML’s Automatic Translation to pay-as-you-go for my site الرابط المخفي. I am following the ticket at https://wpml.org/forums/topic/switch-wpmls-automatic-translation-to-pay-as-you-go/.

Symptoms:
Nothing happens when I try to activate the pay-as-you-go option.

Questions:
How can I switch WPML’s Automatic Translation to pay-as-you-go for my site الرابط المخفي?