Why My XP reduce/ decrease every time? Though I get XP. What can I do ?

Question

I'm learning program , and my XP reduce decrease every time? It should Add.
But It don't Add.
Rather than it reduces/ decrease my XP .
What can I do to Add My XP back / Add?

Answer 1

You can buy my XP here:

https://www.sololearn.com/discuss/2562970/?ref=app

Answer 2

thats why

Answer 3

Tnx

Answer 4

I need my solution

Answer 5

I don't buy anything

Answer 6

are you using hints?

Answer 7

Sometime

Answer 8

Tnx

Answer 9

If you know the way , tell me solution.
I don't by anything.