Hi there!
Did you try to set the height of the addon in settings, please?
However, here is a custom code for you, you can use it in your custom CSS to see if it helps:
.animated-text-words-wrapper .animated-text{height: 70px;}
And for your second line issue you can reduce the font size of your text there as it is not getting enough space so goes down. This will let you have one line appearance.
Note: Path towards custom CSS:
Extensions>Templates>Styles>
Click on your current default template name then choose Template Options.
Then find custom CSS within the custom code.
https://prnt.sc/pu705g
https://prnt.sc/pu70zn
Best Regards