Why does Montserrat font display differently on various browsers?

Store Design
1

Hi I am using Montserrat Font on Dawn theme, it should look like the first picture, but on some browsers/computers it’s showing up like the bottom one. How do I stop that from happening and have the look of the first one show up? I’ve never had this issues on any other stores before so not quite sure how to fix.

Thanks

Should look like this:

This is how it should look
This is how it should look1150×154 17.8 KB

Don’t want it to look like this:

This is how it is showing up on some browsers
This is how it is showing up on some browsers1386×200 25.1 KB

2

@shellbell - can you share this page link? may be font getting overwritten or not loaded properly on some screens