Thanks for the post Mervw1 and welcome to our community.
Have you tried this on multiple hotspots?
Have you tried refreshing network connections on your handset?
Let us know, Emily.
The WiFi can be affected by a few different things so we'd not be able to answer that question confidently without knowing which device is affecting this.
Are there any devices located close to the Hub in the evenings?
Thanks, Emily.