Help me delete this

Hi, I am not a developer and did not build my blog, and my developer is now really busy and thought I could do this myself. I am pretty knowledgable of the WP admin section, and I have been looking for it in the Appearance>Editor but I am not sure which template its located in.

Here is my site – https://sprynyc.com/

In the upper right hand corner, there is a ‘member login’ link. It doesnt render properly when I scroll through the site, and I want to just delete it all together now.

Can you tell me how to delete it?

Thanks!