Woeful Internet Speeds and BT's additional diagnostic keeps failing

[BRInter]

Hi, I recently noticed that my downloads were very slow (10 hours to download a 277MB file) so I ran BT wholesale's speed test and was quoted a speed of 1.76Mbps. BT's quoted speed for the contract is 35Mbps. I restarted the router and had the same speed. I tried the site's additional diagnostic. I entered my landline number and the test went on for a while before it told me that "The test was not conclusive and further testing is required." I tried again, this time the diagnostic immediately failed. I reran the initial speedtest and got 4.5Mbps. Tried the diagnostic. Immediate "The performance tester is currently unable to run a speed test for your broadband connection". Where do I go from here?

[Keith_Beddoe]

@BRInter 

Is your phone line working?

[BRInter]

Yes. Working perfectly fine.

[imjolly]

in order for the forum members to help please can you post the stats from your router (if hub enter 192.168.1.254 in your browser) and if  HH5 then go to troubleshooting then helpdesk and if HH6/SH2 then advanced settings then technical log information . 

enter your phone number and post results  remember to delete number   https://www.broadbandchecker.btwholesale.com/#/ADSL

Someone may then be able to offer help/assistance/suggestions to your problem