As already addressed under
due to recent spam messages, there are currently limits in place for newly registered accounts.
If you just registered your account and can’t open a thread yet, then just browse the forum for a while, use the search for existing threads on your issue, and contribute to the forum before asking your own question.
All of that will quickly lift the limit and you should be able to post your own thread after a couple of hours.
However, do not post your question in random threads. Such messages are likely to be flagged, which may delay the ability to open your own thread further.