Hello, It is difficult to assist you if we do not know your SLP plugin environment , see the documentation site here (see The getting Support post at the top of the threads)
It basically says this
We do not read the support forum here very often.
If you want a quick response please post in the Store Locator Plus forums.
You will need to be a registered user. Register by “purchasing” the FREE Forum Registration on the site.
You can also submit questions via email using the contact form at StoreLocatorPlus.com, but we prefer you use the forums. It helps others find answers to similar questions and keeps our inbox from overflowing. The forums are also answered by several people which means you are not waiting days for a personal response from one of the core Store Locator Plus customer service people.
https://ww.wp.xz.cn/plugins/store-locator-le/