Problems after update WordPress

Hello, my name is Roy form the Netherlands. I try to explain my problems.
My website is created by a designer but she is gone…When I update WordPress, my submenu’s are hidden and no longer visible. I have the Medicom Child theme.

Hi, you can try to contact the author, but it doesn’t seem this theme is being supported anymore:

So your best bet is probably to hire a developer who will help you to fix those issues, for example at

I don’t know who that is and how to get in contact with them.

the author is no longer active I suggest? I will watch the suggestion

I gave you a link to the comments section where you can ask your questions, but the author doesn’t appear to be active anymore, so hiring a developer is probably your only choice (either that or changing the theme).