The +27.570 steem is delegated SP that everybody gets as a "starting capital". Thid will be taken away from you, omce you reach 50SP from your own posts as far as I know.
You get SP/SBD frpm your posts, comments and curations only 7 days after you took that action, that may be why you didnt see any growth for a couple of days now.
The value of you account depends on the market value of steem/sbd as far as I know. And I guess the increase in members up here also leads to inflation of each individual account, but I may be wrong about that..
Hope I could shed some light with those infos. Reply to my comment, if you have any more questions
After checking your blog, I have seen that this was it: your posts from 7-11days ago didnt make any profit, that is why you didnt get any rewarda for the last 4 days. But in the following week you will get some from the posts you made during the last week, since you got some upvotes on those
So the steem power and steem dollars take 7 days to get to you?
Why is it that roughly every 12 hours I got a message saying "claim your rewards" in the wallet?
Exactly. The frequency of your claimable (is that a word? Sorry not a native speaker) rewards comes from your frequency of posts. Within the last 24h you made around 10 posts, so in 6 days there will be a day in which you can collect rewards around 10 times. Once for every post you submitted exactly 7 days ago... is it clear how i mean this? You can pretty much set a timer to 7days for every post you submit to collect that posts rewards right then.
You wont have to collect it for every single one on its own. You can also wait 3 weeks and then claim all the rewards from the posts that made a payout during that period
This makes sense. Thank you.