If koalarescue.com.au is your site, it looks like your menu links are not working well as Scroll to Target links in mobile view. I did a quick look at your page in the Safari Web Inspector and it seems that the current menu links may have a problem using Scroll to Target.
If you’re needing to get the web site to work quickly, perhaps try changing the menu links temporarily to use Navigate to URL and enter text following colons below for the applicable menu items. Appended to your domain name, these URLs seemed to work for me to go to correct anchor point for each item in mobile as well as desktop.
About Us: /#bloc-32
About Koalas: /#bloc-34
Btw, I noticed many of your section blocs seemed to be in the footer section instead of the main section of page. Not sure if that would cause any link problems. Also, the Contact menu item seemed to have an incorrect bloc id, even though it did seem to link to the correct area.
Do you think it might be worth trying to rebuild your web page again recreating blocs and web links to see if works better?
I’m not that knowledgable about the coding issues, but this is what I found.
Hope it helps.