Kicked to lobby after about 4 hours game play

Summary

While playing a map i have been creating last night (unlisted) 2 random people joined then a friend joined. We were all playing it for hours then at around the 4 hour mark we all got kicked with no warning just got sent to the lobby.

I thought the server time was increased but more frustrating there was no warning so items/in game things couldnt be completed so some data will be lost.

Should the server time be more than 4 hours even on an unlisted version ? Is there usually a prompt like in a uefn session saying server will disconnect ect ?

Unsure if this is intended behavior but i think its a bug or some oversight on an unlisted version of a island

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Stability

Steps to Reproduce

Play a public unlisted version of an island for roughly 4 hours

Expected Result

I thought the server times were increased to upto 19 hours from the first initiation of the server - First player to be on the game

Observed Result

It kicked us all with no warning or anything

Platform(s)

pc

Additional Notes

Please let me know if any info is required

Got kicked again last night

Can this be looked at please as its extremely annoying you get no warning or prompt and it causes issues with the game but furthermore the time played analytics get messed up in the cp as its kicking us so average time is then cut down.