Thank you @paul2009
It's great to be able to renew indefinitely, but at that point, why not make trials unlimited (at least for circle members)? I have this case where I'm helping a student in architecture build a portfolio during his 3-years formation. He wanted to go with the main competitor because he could keep his website trial active during these three years. I have no doubt he will need a pro website when he graduates, and at that point I have no doubt he will simply activate a paying account on whichever site he has built beforehand.