why dont my shared photos go to via iOs anymore on Facebook?

Hi minks11,
To make sure we are on the same page, you are using iPhoto for iOS to share your photos to Facebook. If that is the case, that app is not supported anymore since iOS 8 and beyond. Your best bet would be to migrate your information over to the Photos app and the article below can assist you with that.
Migrating from iPhoto for iOS to Photos on iOS 8
https://support.apple.com/en-us/HT201386
If that is not the case, let me know and I or others can help you out further.
Have a good day

Hey minks11,
Thanks for the clarification. I would first check to see if Facebook is turned on when looking at your additional Share options. Tap the and then scroll to the right and tap More. You will then see a list of apps that you can share with and look to see if Facebook is toggled on.
Other ways to share photos and videos
http://help.apple.com/iphone/9/#/iphf28f17237
Another thing to check is to make sure that you are signed in correctly in Facebook in Settings > Facebook.
Use Facebook, Twitter, and other social networks with iPhone, iPad, and iPod touch
https://support.apple.com/en-us/HT202605
Take care

Hello minks11,
Well that is interesting that it is still not working. At that point, I would recommend contacting Apple Support for further assistance. You can use the link below to get you started.
Contact Apple Support
https://www.apple.com/support/contact/
Take it easy

Hello,

I have the same problem as minks11, have you found a solution?

thanks!

Right now the only way i have found in order to post a status or photo and say "via ios" is to delete fb app from ur phone and then share it