Linkin a midi keyboard to Logic Pro X

[Al Hinds]

This is my third go at posting a query here, in amongst some signing up etc, so apologies if all three of my posts appear all asking the same thing!   I have been using my Edirol PCR 800 midi keyboard with Logic 9 for many years but I recently upgraded to Logic Pro X. Now the keyboard won't talk to Logic X.  I've tried a few YouTube tutorials and also followed the steps given on the Roland website to no avail. Has anyone else had this problem and solved it? I'd be very keen to know what you did to get the to work together.  I also upgraded my Mac operating system to Mojave - not sure if this has contributed to the problem.  Many thanks for any helpful suggestions.