it's also possible that maybe a map gor re-rated, no? if a map is now a lower rating than it was before then your points will be lowered as that map is now worth less points. Could also just be a database error like skeith mentioned.
You need rocket and laser there, launch a rocket straight up, swap to laser, jump when the rocket lands and laser yourself, swap back to rocket and go up the wall. You can maybe just use rocket but way harder