Hi.
What should I do? Should i bump posts - is it the same “spamming” like if I create a new post in a group?
Bumping post is actually commenting on it, then deleting the comment - that’s how the tool works.
This will make the post appear in newsfeed of users - member of the group. So, it’s not really like creating new post, but it’s still interacting with groups and you can get blocked from posting and commenting on groups if you use it too aggressively. So, be careful.