Why is it that my reading kyu is much lower than my rank?

[Ethelor]

I am a 12 kyu on kgs but here I can only solve problems at around 20 kyu, why is this?

What can I do to even it out? Should i solve tonnes of problems or what? Will it make my playing any stronger? I mean ofcourse it will, but substantially?

[dracula]

If I had to guess, I would say that goproblems.com ranks are on average way stronger than their KGS counterparts, but the ranking of the problems tends to be very innaccurate, so Don't take the ranks too seriously. And, yes, at your level you should improve very quickly by solving tons of go problems.