I've realized that Landing Page Publish is slow. So, While I was looking for solving this issue, I found that can be improve Cloud Page in Dropbox using %%=TreatAsContent(HTTPGet('')=%% Method.
But, For some reason, that does not seem to work as expected.
TreatAsContent Method shows the HTML Language Source, Not the page to which the code is applied in Dropbox.
Could you tell me what I missed and How can I solve this problem?