Please edit your post in case you want to add information. On phpBB.com we have a 6 hour bump limit
The 3.0.10 version of the style will support the Q&A captcha, but you may experience other issues. As been said, boards version and style version should match.
You could update the style manually with the code changes for the prosilver style: https://area51.phpbb.com/code-changes/3 ... -prosilver