Easylighting app stopped working

After several months of good service, the Easylighting app on my Homey Pro stopped working yesterday. No connection anymore with the concerned devices (dimmers). I deleted the app with the intent to re-install it, but when I install it says “Easylighting will install on Homey shortly” … but then it never does so … Any thoughts ? Much appreciated !

Thank you Peter for your quick response/suggestion ! I will try it asap (but not possible before Friday 25/4)

Problem solved : Easylighting app could be installed again after rebooting the Homey Pro. Thanks for the advise ! (Root cause remains unclear though)