For the past few days I have been getting the "Access Point Temporarily Full" message from the wifi hub on the standard 2.4GHz channel. It will have kicked devices off the network and won't allow any others on. There is not an excessive amount of devices connected to it, e.g. this morning it happened and 8 devices were connected. A reboot of the hub resolves it temporarily, but this is not an option when there are multiple people at work/school on devices it hasn't kicked.
I know using a wired connection (impractical) or using my own wifi router (costly) will sort it out and also resolve the shockingly poor wifi coverage in the house but in the short term is there anything I can do to get rid of this issue?