[this isn't permanent however.]

The reason for this is because in the original time before T10 was heavily revamped (http://ezserver.online/forums/index.php?topic=5309.0) - the zone was ridiculously resource intensive for many reasons. Also, we can't afford to have 15 of them open because one person decides to have one entire T10 instance to 1 toon each (this does happen). So yes the barrier to entry is by design, this isn't permanent however.
Since our server code has much improved after much slave labor and ridiculous amounts of time invested into providing a better Emulator platform for all servers, this would be much more plausible.
T10 being affected by DL/TL modifiers and allowing FWP instance creation won't be active until T11 is released. This allows bridge gapping for folks who have struggled getting through T10 to have a hand up and then T11 may have similar restrictions depending on what aspect of the content. These bridge gaps have come in the form of DL/TL mods and zone pull items acquired through special events.

Since Sleeper's Tomb has been created, is there any chance to allow FWP creation now?

DL Links to UI windows are not working anymore - same with the links on EZserver's wiki page (http://wiki.ezserver.online/User_Interface_Mods).   
Could you please upload the files again?

I was farming Anguish for UC2s. When I ported back to nexus with the group I suddenly had no more armor on my war (and only him): his inv was completely empty  - only money was still there. 
Fortunately after relogging his armor was back, but imagine my panic ....
Is this issue connected to the new site migration or is it caused by other reasons and how can I solve them?

Looks like the flagging process isnt working with the new epic type.

I only tested with going from 77 to 78, but I got a blank response from the LUW when I used the new aug, but it worked fine when I converted it back to the original aug.  Chars name is Kevice if you want to look at logs.  Time stamp was 11:51 to 11:54 is MST.

Tobin

Seems to be a similiar issue:
Tried to give my epic augment 7.1 and Charged Veeshan Scale of Power to Epic Vendor (EV) in ToV (Ranger char->Lagornson).
But EV gave it back to me. I had to change  it back to 7.0 to have EV accept the aug and scale in order to progress to 8.0.
After that I could change it back to 8.1.

As I used 2 Ranger Epic Modificatioon Elements in this progress I guess I have to farm more elements in Qvic ....