[CyberShadow]

Looks like it's impossible for me to use this service - when I try to submit the form, I get a reCAPTCHA challenge. By the time I complete it (Google requires me to make several attempts, each one being several pages), the page errors out in the background with "reCAPTCHA execution timeout".

[lionkor]

Try solving it slowly, some captchas love that.

[CyberShadow]

I don't think you understand. This website imposes its own time limit within which I must solve the CAPTCHA. Taking your time to solve the challenge slowly will not allow you to proceed, because the website's timeout will have expired.