Have difficulty Editing SP Pagebuilder especially the Home page on the Indigo Template

Greetings
I have been trying to edit the home page of my website but to no avail.
If i click on the sp pagebuilder and click on the home page it automaticall says
“Warning You are not permitted to edit this page because one more user is already checked-in” then it will show a padlock on top with the message checked out.
Meanwhile no other person is even aware of the link, not to talk of being looged in. Same thing happen even offline. Because of that i cant edit the home page as well slideshow.
Secondary I can’t export any of the pages nor have the opportunities to import any page as well.
I have made available the backend details for you to be able to check through.
Please help me look into it .
Looking forward to your prompt response