If the lost MDDs are still frequent sfter you cleared the logs then it does look like a downstream problem.
You will need to contact VM to take a closer look, either by waiting here about a week until a VM Forum Team Member picks up the thread, or give them a call on 150 from a VM line or 0345 454 1111 for a quicker response.
Thank you for posting! I am sorry to hear about your network log errors and slow connection, I apologise for any inconvenience caused.
I have run some checks from here and I noticed a number of time outs inside the Hubs logs, I would like to arrange for an engineer to attend and investigate things for you. I will send you a PM (purple envelope at the top) detailing what's required to proceed with making the booking.
Please respond to me there and I'll get this sorted for you.
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