Let me be abundantly clear:

Upvoting your own posts is self-serving and does nothing for the community.

Unfortunately, it's not something strictly disallowed by Hive, so we only make note of it when considering other activities alongside it. It's a red flag that prompts us to pay closer attention to a poster's other activities.

In your case, you were rehashing content belonging to the Gods Unchained team. There is no way around that fact.

In response to your other comment, it is not the same as vocalists/musicians doing covers of music, because their individual voice is unique to them and thus adds to the original work. There are still very strict Intellectual Property rules that exist for governing royalties that must be followed. Whether or not other communities follow those rules has no bearing on whether or now we enforce a strict no-tolerance policy for plagiarism of any kind.

A simple warning would have been enough

A warning has been provided.

but going back to downvote all my previous post is low

What you did was wrong, whether you realized it or not at the time. Your "punishment" was to lose what you gained from something we do not allow in this community. Thieves are not allowed to keep what they stole when caught just like you are not allowed to keep the curation rewards you received for plagiarizing GU lore when discovered.

The difference is we didn't remove you from the community, entirely, and future posts will not be downvoted provided they are original content made by you.