I've used Google to check a couple of your posts and they seem to copy word for word posts that appear on
https://swiftcointalk.org/.
Unfortunately, it appears that I have to log in to get to the particular posts. Since I don't have an account with them, I am not going to bother. You are most probably banned for plagiarism.Edit: this post of yours:
The classical computers process data while the quantum computing is a new method to process data and solving problems that classical computing are not capable of.
There are some computations that was thought can not be possible but now becoming a matter of time by quantum computer.
As I read it, it was written that quantum computing that computer giants like google are working on now can not break blockchain and the underlying cryptography. But, with time, there can be more sophisticated ones that can be a threat to blockchain. So, they are a threat to blockchain and cryptocurrencies.
It will be better to create a quantum resistant layer to an existing blockchain protocol to increase its security or create a quantum resistant blockchain from scratch. They are the recent approaches.
Is an exact copy of the post found here: https://www.swiftcointalk.org/latest-bitcoin-news/quantum-computing-threat-in-relation-to-crypto-and-blockchain-technology/msg328243/#msg328243
Further edit: It appears the post on swiftcoin came after the OPs post here.
I didn't spam neither did I plagiarize as I said before. I haven't even visited the site you said before. I stay more often on cointelegrah and coindesk. If you check these two crypto news site, you can gain a lot than spamming and plagiarizing.
I noticed if you take your time to write quality article on this forum, they might think it is spam or plagiarism.
I am not 100% perfect and I am still new but the cause of my ban should be other reasons because I can tell you that I did not plagiarize.