Domain Rank Went down [HELP]

Hello Guys. So 2 days ago checked href seo tool and my domain had 300+ Backlinks and 82 Domain Rank
Today i lwent to href to check and this can someboy explain what happened???




I didnt order any backlinks All got was web 2 tumbler 20 posts that was delivered today. But that i thing couldnt to this

Does it means someboy spammed my website with low quality backlinks to kill my web?

If thats what happened what re my options to get back to 82 domain rank?

I wouldn't worry about your domain rank, it won't effect your actual rankings in any way. You should worry about your actual SERP rankings instead.

Wait for 2 to 3 days. It might just be Google dance. You may get benefited from this, if not, use Google's disalow tool.