~900Mb line always 20-30Mb in evening? Engineer on way, but not in the evening lol

[Gadge]

As per title, we suddenly last few days have a huge issue of 20-30Mb bband when we're paying for much, much more. It's killed our streaming.

Engineer coming Saturday, but I can't even show them the problem?? I searched old posts and it's advising wholesale test which obvs has gone. I can't even log into bt through "fix a problem" .. as soon as I get to the test it says "couldn't find your account!" and I'm logged in, looking at my account!?

Any help appreciated (beyond wild guesses lol)

[pippincp]

The BTWholesale speed test cannot be used for FTTP lines. Use Fast.com instead.

[rbz5416]

If you create at account at Think Broadband, their speed test logs all results in your profile.