Thanks for posting and a warm welcome to the community.
My apologies that you are experiencing slow broadband speeds. I know how frustrating this can be.
I've managed to locate your account, the line and hub have come back as fine. There are no faults reported and the traffic on the network is running low, which is good.
Are you able to complete a speed test whilst the Hub is in modem mode please to see if the speeds differ? With the PC/laptop you are testing with does this have a gigabit LAN card and are you using a Cat 5 e or above Ethernet cable?