Smh. You see the linuxserver version and the binhex version side by side in your screenshot and you still select the binhex version. Why? Not that there is anything wrong with that version, but I'm asking you to follow the simple steps outlined in the troubleshooting article. We put a lot of time into it and it gets frustrating when users still don't follow them even when we spell them out step by step.
The whole point of the troubleshooting article is so you can make sure that your ports are properly mapped and forwarded and that the container is accessible from the internet. Only then, you should try to set up letsencrypt. Otherwise there are too many reasons why it can fail and as you experienced, if it fails a bunch of times, you're throttled.
So read the directions carefully.