There have been reports of people not being able to post at certain times. This is likely due to a system error or some software housekeeping was being done.
Regarding your concern, there are certain plans that they do not outright "renew" (actually, proper term is RECONTRACT since plans actually automatically renew as stated in the contract). I'm not sure, but what likely happened was that the plan you were on was no longer being offered. What the CSR did was to change your plan to something similar. This is what they always ask me to do when I inquire about recontracting. Of course, I always decline.