How to register engine

Sorry about the issue with that page. There is nothing more frustrating than web systems that don't behave in a rational way. Unfortunately we can't assist directly with debugging the registration page, because it is hosted in Austria. 

If you can provide me information with the web browser type and version, device, and operating system you were using, I can get a bug report started for it with the tech people in Austria.  USUALLY, if you hit a glitch on those pages, just using your back button will get you back to the previous step OK. 

I strongly recommend using the latest version of Chrome browser - the registration page has had some known issues in the past with some out of date or deprecated web browsers ( like IE11, for example).

If you haven't seen it before, its good to have some info gathered in advance - see this page: https://www.rotax-owner.com/en/rotax-blog/item/50-online-ac-engine-reg

... well im a bit behind the times ..still using & loving windows xp on my dell super-com.  : }  ... & the version of chrome from those days .. so mebbe i ought to log in via my i-pad & see if safari can do it ?

Wonderful accumulation of threads, logically organized for the most part ...i've allready learned a lot & have hardly started, kudoes to all who contribute.