chandureddy_VNviyQ7M3r i was facing this same issue before on cmf ph 1… i had this problem with almost all notifications.. WhatsApp Instagram and even emails notification were late…
I whitelisted these apps… if you have pc then I'm linking a reddit post you can follow the step …
Reddit post Fix Delayed Notification : r/CMFTech https://share.google/bSdOU6LFGfHcnxSZZ
You can give it a try and update here if your problem het solved…😁
