I do have an older FT5. I use only the 4 leveling screws on the edges.
I still have the 4mm original ALU-bed and it's fine to me.
I suppose the 713 machined bed is at least 6 or 8mm thick and should have no issue at all.
Hope this helps.

I do have the same issue.
After uploading a file, I cannot find it in the list. On the panel due I however, I can select and print the file succesfully.

Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Electronics: Duet WiFi 1.02 or later
Firmware Version: 2.0(RTOS)RC4 (2018-05-17b2)
WiFi Server Version: 1.21
Web Interface Version: 1.21

@Cata:

"The documentation dont have a youtube tutorial, this sucks"

Oh yes : The least that could be expected was an unboxing video. Struggling getting my newly purchased DUEX5 out of the package

Since I switch bed surfaces all the time (most of them are 4mm float glass, but also PC and PEI) AND I use 3Dlack, I have a BLTouch installed since I wanted to physically probe the bed. I tried the IR probe, but with the different kind of surfaces I use, it wasn't working well in all cases. On clear glass with the ALU bed paitned black, the IR probe was very accurate.
I can't complain about accuracy for the BLTouch.
But I don't print at 0,05mm, seldom at 0.1 and most of the time it's in the range 0,2 to 0,5mm …

@dc42:

All stepper driver chips have clamping diodes built in.

Thank you David.
I knew it was still a possible issue with the TMC2100 … I had some Schottky diodes (B2100) clamped to V+ and GND to protect them and didn't see this in the drawings for these ones...

I know the stepperdrivers are quite solid, but since they are not easily replaceable in case of damage, wouldn't it be a good idea to protect them with clamping diodes to V+ and GND ?
To protect the drivers from overvoltages when disconnecting steppers when they get the full current or moving around with the carriage while not powered …

Don't hesitate. I use a relay with real contacts…
After the main power switch there is a small PSU that feeds the safety processor. The safety processor is in control of the mains power for the rest of the printer.

It's not directly Duet related, but can add some more safety to a hot printer with sometimes bad and smoking connectors or cheap chinese powersupplies with burning inrush NTC's …
I had this thing already in mind for some time now and wanted an independent security device that could cut all high power stuff in the printer upon detection of a potential danger.
The danger my wife has in mind is fire ....
So this one detects smoke, CO2 and some other gases and can detect high temperatures with 2 independent detector units.
I want every user to be aware of that and consider this as my contribution to the community.
Think about it and feel free to use or modify it (as long as you share it too).

See thingiverse : https://www.thingiverse.com/thing:2548411
And Github : https://github.com/WalterSKW/SafetyProcessor
and Youtube : https://youtu.be/euKyRw3iZ7g

I use 2 twisted pairs of a 8-pairs shielded cable in a 4-wire connection. No issues whatsoever. Cable is around 100cm long.

@dc42:

I need a solution that works for everyone

Only one solution then : a RTC.
For NTP the printer has to reach out to the internet. I guess not everyone allows that.
Date/time setting could also be implemented as a function on the PanelDue for those not using DWC

Edit : Adding a small RTC board stacked on the PT100/Thermocouple board connector? (http://www.st.com/content/ccc/resource/technical/document/datasheet/group2/40/3f/91/e4/91/a1/47/7c/CD00129012/files/CD00129012.pdf/jcr:content/translations/en.CD00129012.pdf)