New customer.. Paranoia or genuine issue with speed suddenly?

[#1]

Apologies in advanced if i'm jumping the gun here but anyway...
Was consistently getting around 58-60mb on fibre plus (wired ethernet and on 5ghz wifi) download and 18mb upload for 2 and a half days straight and all seemed well on the hub one.
Then a few days ago (04/03/16) just after 12am lost connection and hub was showing red b light, took a minute and came back but since then i've been stuck at 19-20mb download but upload  stayed same since
" Download speed achieved during the test was - 19.77 Mbps
For your connection, the acceptable range of speeds is 43.47 Mbps-62.09 Mbps .
Additional Information:
IP Profile for your line is - 62.09 Mbps"

"Upload speed achieved during the test was - 18.63Mbps
Additional Information:
Upstream Rate IP profile on your line is - 20 Mbps"

Now i'm aware during the first 10 days speeds were going to be up and down but to that extreme of a drop, is it normal? Reason i'm concerned is by it staying at same speed since and not fluctuating at the 20mb area rate. If it's normal, then i'll plod on but just concerned with a 40mb drop after the loss of connection

[#2]

What does https://portal.plus.net/my.html?action=data_transfer_speed say for your current line speed?

[#3]

Hi, this is what it says:
Estimated line speed:
80Mb (This may vary between 66.1Mb and 80Mb) - Checked on 2016-02-04 22:23:45
Current line speed:
62 Mb

[#4]

If you haven't done so try a disconnect/connect.

[#5]

Spoke to online chat and on the phone afterwards [both very helpful]. Problem resolved in the end