looking at ExploRABLE it needs to run on Sparkfun 2.0.5. ArduinoBLE runs and works well on 2.0.5. The warning message about compatibility can be neglected. It is because of a parameter library.propertiies file. Not sure what Led-example you used and what the error message is that it does not compile. please share that so we can help
These are not “errors” that will block compile, but “warnings”. All of them are because the way they are defined in ArduinoBLE library and conflict/overlap with earlier definitions. A number of them needs a different way way to allocate memory etc. Despite these warnings… code compiles and works.