Glad to hear your ADSL2+ service migration to Plusnet is complete, hope it went well.
Your line synch speeds certainly look reasonable for ADSL2+ service by comparison to my line before I maigrated to VDSL.
As a long time Plusnet customer, I would advise using their forum should you need any technical support, I have found the PN staff members who monitor the forum to be very knowledgable and supportive, better than the telephone support route my far.