Screen to advise subscription renwal

Hi, thank you for reaching out to us. This issue is probably happening because of the theme you are currently using.

I have submitted a message to the developers to investigate further your question/issue.

Kind regards.

@mgerney, As suggested by @mbrsolution, this is due to the CSS that your theme is applying or there is a conflict with another plugin. The following test can be useful to identify the source:
https://simple-membership-plugin.com/forums/topic/test-for-plugin-and-theme-conflict-before-posting-an-issue-or-a-bug/

You should be able to add a bit of CSS tweak to your site to override the font-size. We have an example of the CSS tweak in the following page that you can try:
https://simple-membership-plugin.com/miscellaneous-css-tweaks-simple-membership-plugin/#account_expired_renewal_msg

You can add CSS tweaks to your site from the following interface of your admin dashboard:

Appearance -> Customize -> Additional CSS

Thanks – that’s what i needed to know!