I posted a question yesterday, but no one answered it and it only got a dozen views. How long should I have to wait before it is acceptable to post the same question again?
Forever. You should never repost a new question which is exactly a duplicate of one of your previous questions. If you do so, you will be flooded with downvotes and your question will be closed very soon.
The best way in this such cases is to modify the question so that it is bumped to the home page, and other users can see it. Edit the question; add more informations to it. Maybe consider editing the title to make your question more attractive and "interesting" to others is also a good option.
You can also offer a bounty for it. Literally every bounty makes the question much more attractive.
However, I voted to close your question because it literally has nothing to do with TeX or LaTeX. Texstudio issues should be asked in Texstudio bug tracker. This site is only for, say, issue with compiling with Texstudio, or customize Texstudio so that it accepts