People sometimes use “as” when they mean “because.” Well, don’t. Use “because.”
“As” means something like “at the same time as,” and here’s an example of how “as” should be used:
Now the company has removed a link from its download site, and updated a support page to say “We have paused the rollout of the Windows 10 October 2018 Update (version 1809) for all users as we investigate isolated reports of users missing some files after updating.”
This is The trade rag Engadget quoting Microsoft. Guess Microsoft got something right, eh?