I’ve been trying to contribute to SU Labs for a few days, now, but every time I send in a contribution, I get the following:
I’ve tried several different browsers, turned my VPN off… nothing makes any difference. I’ve also got no idea how to contact Centercode Support… any ideas..???
Hello Michael,
I am investigating this for you now 
I’ve looped in Centercode support on this. Doug (from their team) is asking for a bit more context: what specifically were you trying to do when it happened (submit an issue, survey…)?
If you can grab a screen capture that includes the URL, that would be a huge help. It’ll let us see if there are any errors hidden in the link.
Hannah – I’m really sorry for the late reply: the url is

I get the ‘Server Error’ message when I press ‘Submit’, trying to report a bug..
No worries, Michael. Thanks for following up. Our friend Doug at Centercode has let me know that they were able to get the error log related to this and have a filed a ticket for you!
I’m still getting the ‘Server Error’ message…
That is frustrating. I’ll let Doug know.
*Sigh..* Still not fixed…
Hi Michael,
I’m so sorry for the late reply!
I am still in contact with Doug regarding this issue. Because we haven’t received any reports of other users experiencing the same thing, we are wondering if this might be isolated to your specific computer or network.
Doug has suggested trying a few things if you have a moment:
Let me know how it goes, and thanks for your patience while we get this sorted out!
I’ve tried different browsers, (Safari, Brave, Firefox) turning my VPN off, Private mode in Brave… the only mobile device I have that uses cellular data is an iPhone, so that should be interesting… 
On my iPhone, on cellular data, still get the server error…
Just changed my ISP and… problem is still occurring…