Rate limit exceeded - installing themes - how to install more themes

I get error: : “rate limit exceeded” trying to add a theme.
I have two themes.

What can I do to add more themes?

Themes I have:

Error message - rate limit exceeded

I tried again the next day. I was able to add more themes. I’m concluding that there is some daily limit on installing Themes. I didn’t experience any limit installing Plugins.