New account after shadow ban

Hi all. I have a Tumblr account for my brand that is about 2 years old and has been shadow banned.

I assume I have been shadow banned for a few reasons:
-I cannot find my posts when searching tags
-When searching my blog name I can only find it by putting the URL in directly, the search will not suggest my blog if I type most of the name in.
-Average notes per day took a HUGE drop a few months back and nothing I did could bring it back up (went from 200+ notes a day average to 0-2 per day)

So I am going to create a new account for my brand and had some questions beforehand.

-Is it a bad idea to reblog posts from my old blog to my new one?

-Can I setup/use the account on the same sim card/IP I used the old account on?
(I run 3 accounts on 1 phone with no issue currently)

-Can a shadow ban be lifted? Someone once told me they were shadow banned on Instagram and it wasn't permanent.

Any insight would be greatly appreciated.


Other info:
- This account has 3 blogs on it. The banned account is a secondary blog and the primary blog doesn't appear to have experienced a ban.

well i know about this kind of ghosting:
first when you create new acc and make post with tag it will not be visible for some day you need to follow/like some users also change theme ..
new ghosting that happened few months back is when you put link in your post, the post will be not visible in search only few whitelisted domains are working
there is also same tag overusing ghosting https://unwrapping.tumblr.com/post/68005030182/tag-page-post-limit

do you contacted support? maybe they can help you but mostly they not reply so with luck you get answer

You can certainly reblog old posts, but they won't appear in tag searches either.