There is a more fundamental problem which is still not resolved.
1) I turned off the two slides on Bootstrap slider that were not needed.
2) I amended the target for the link
3) The error appeared on the slider and the button code reverts to the error message I gave you before. When I replace my amended button code with yours and save it, the change does not remain and it reverts to error. See Slide 3 on the slider which is the only one I changed.
What is happening that code that I enter is not saving? This has been going on a considerable time and wonder why my installation of your theme is so unreliable. Please can you help me to get it running properly.