1. please move your WIFI Device close to the CIK Modem/Router, then check the Sync Strength on your WIFI Device, if the WIFI Sync strength is getting better.
2. If the WIFI Sync is weak, but you don't want to move the CIK Modem/Router to other location which will be close to the WIFI Device, you can purchase or rent CIK MESH Router.
The CIK MESH Router can improve the Internal WIFI Sync, it support WIFI 2.4G and 5G , with Better WIFI Sync Strength and stable WIFI Sync.