Do you have a meter? $10 at walmart, looks complicated but 12vdc is easy.
If you're desperate get some zip ties, rope, etc. and tie the arms together.
The hard part will be securing the fabric. If your in a campground ask for help, someone will have ideas about securing the awning AND many suggestions about your problem.
When our awning arm broke I got a lot of help
. One "take charge" person almost
demanded I take the whole thing OFF
Took a few minutes to zip tie, with help (I carry industrial strength ties), for the 1k mile trip home.