I was an active user 2 years before. brilliant was not like this before. each week u got a set of eight questions. if u can at least solve 15 / 16 sums ( u can get at the most one wrong in 2 weeks ) then only u can level up. without levelling up u don't get access to problems of higher level. many a times I got right answers for the 8 problems of week but did 2 or three wrong in the next week. this way I wasn't able to level up. at that time also I was an active member. after some six months, lots of changes were made. for new sums u didn't have to wait for the next week's Monday. users can also post the sums and many new sums from staff were also there. u got access to the sums of higher level(provided u follow the people who post sums of higher level) levelling up and scoring points was not hard then. I was an active user of brilliant even before these changes took place and brilliant became more irresistible. now I don't get much time for problem solving on brilliant. now when I am asking a simple suggestion, why I am not getting a reply.