Switch to Mobile data message

[Cprice]

I've received this message last week for WhatsApp and now received it today for Snapchat. See screenshot. 

Any ideas? I'm thinking that my Note 10+ might be having some wifi connection issues,  when this happens I try other devices that are connected to my wifi network and they work fine. 

[CHMultimedia]

Is it only this app that can't connect? When this message happens, do other apps work fine on WiFi? Does the issue only happens on a specific WiFi access point or every access point you tried?

[Cprice]

I've seen this issue last week with WhatsApp (2 times) but hasn't done it since and then today with Snapchat. I work from home so I'm basically connected to my home wifi all day. I can't say I've seen this happen on other wifi networks as I'm really not connected to other wifi networks when I'm not home.

[Echo1]

I am on what's app but not snapchat and I have never seen this before, does it happen on all wifi connection.. ie work or home etc?
The only thing I can think of is try forgetting your wifi connection the re add it and don't forget to add it to your trusted devices.
Sorry can't help anymore

[Cprice]

I've never ever seen those messages until I got the Note 10+