Thank you for contacting WPML support, I'd be happy to help you with this issue.
Checking on our server, I see from Sep 06 - Sep 20, about 200,500 words are translated on your site and the translation engine is Microsoft so the credits used are approximately 200k.
And this is the first time you have reached the first safety limit with the new Pay As You Go subscription so you need to pay for the used credits to continue translating content on your site.
"If you use pay-as-you-go, there are two safety limits that prevent you from accidentally spending too much and protect us from fraud. These limits occur the first time you spend €100 and €4,000 in one month. If you reach these limits, you will be asked to pay before you can continue translating. At the end of the month, the amount you paid will be deducted from your invoice."
I attach the translation report file in the next private reply so you can check this on your end.
I hope I was helpful. Don't hesitate to ask if you find any problem along the way, I'll gladly help you.