One thing you can try is to put the buttons in a ‘container’. You can do this by going to the edit button screen and under the tab ‘container’ and click the checkbox next to ‘use container’. Secondly in the same tab, set the ‘alignment’ select to ‘display: inline-block’.
Please note this will change the output on desktop as well, so don’t forget to test that.
If it doesn’t work you will have to alter your mobile theme to allow for enough space between the buttons.
Thank you for responding. The first two ideas were already in play. Under Jetpack settings I don’t have many choices to alter the mobile theme. Am I looking in the right area?
It’s really dependent on the theme you are using. I’m afraid that when the layout doesn’t work as supposed you’ll have to look in the design of the theme, altering the CSS to fit your needs.
Did you try to use the container? Playing with the margins and the ‘display:inline-block’ setting often fixes these kind of issues.