Some moments it may due to Screen Size and/or monitor resolution that causes the screen unable to display the full size of the application via Web Browser.
Here we had some tips can share with our customer and/or users
For Google Chrome
Change text, image, and video sizes (zoom)
https://support.google.com/chrome/answer/96810?co=GENIE.Platform%3DDesktop&hl=en
Copy the above link and paste it to your browser if you are unable to click from the above link.
For Microsoft Edge
How to Adjust the Resolution in Microsoft Edge?
https://help.zolasuite.com/portal/en/kb/articles/how-to-adjust-the-resolution-in-microsoft-edge
Copy the above link and paste it to your browser if you are unable to click from the above link.
For FireFox
How to Adjust the Resolution in Firefox?
https://help.zolasuite.com/portal/en/kb/articles/how-to-adjust-the-resolution-in-firefox
Copy the above link and paste it to your browser if you are unable to click from the above link.
For Safari
How to Adjust the Resolution in Safari?
https://help.zolasuite.com/portal/en/kb/articles/how-to-adjust-the-resolution-in-safari
Copy the above link and paste it to your browser if you are unable to click from the above link.
Note:
Once you adjusted the screensize make sure you refresh the page in order the screen is able to fit and/or display as you wish to.