I don't have this on my listing page, just the usual:
'Pay only when you sell this month
No insertion fees on up to 100 listings per day. For auction or fixed price listings'
And:
'20 free listings per month, list now!
No insertion fees for auction or fixed price listings at any start price, excludes Motors'
Do you get the same thing if you use sell similar?
I have a couple of things on 30 day listing but I don't like good 'til cancelled because I forget to keep an eye on them. I don't have auto-relist ticked on anything, there was an issue when it was first added where it kept coming back, and Ebay have been making some (more) changes recently so perhaps it will right itself.
It might be less glitchy if you use the Advanced listing tool and save a template with the settings you want to use and see if they stay when you use it.
I think they randomly choose people to mess about with and test things, just as you get things how you want them they come along and change it all again. My Ebay pages were updated to new format, last week, and at the same time every log-in came up in a different language, several different ones, not just the German that it started with, also a few others, some I didn't even recognise.