This ticket has been inactive for quite a while. I didn't get a reply from you. So, I've transformed this chat into a support ticket because you may still need our help.
Since your last reply in the chat, I added the following information that includes two videos on how you can assign credits to your site from your wpml.org account and how you can register for the Pay-as-you-go option. This is what I wrote in the chat.
I recorded a video for you so you can see how to assign automatic translation credits from your wpml.org account to your site. Please watch it here: hidden link
I also have a video for you on how to enable the Pay-as-you-go option. Please watch it here: hidden link.