Cyclic User Not accepting items
In update 4.0.6 the Cyclic automated Users do not accept items from any any transfer device such as Item cables from Cyclic, translocators, or even ME Export buses, worked fine in 4.0.5. So I just tested 4.0.6 with Cyclic 1.19.8 and it works just fine, does not work with 1.19.9 and up
Problem still exists in SF 4.0.8 (now marked as a release)
Cyclic is listed as 1.19.11
I am getting the same problem in SF 4.0.8 as well... I tried itemduct and translocators
Latest mod version is 1.19.13, Works from hoppers and most cables,

Not that it is going to ever get fixed in SF4, but I figured out the root cause, and its on the cyclic side.
The Cyclic author changed the code (somewhere between 1.19.8 and 1.19.11) to only allow "1 item per slot" in the user's inventory, "for balance", and due to a slight malformed bit of logic, when new ItemStacks are inserted, if they have a quantity >1 they are just outright rejected.
Despite saying "you can still insert as fast as possible" in the changelog, this isnt entirely true. You have to MAJORLY slow your roll to get it to accept items. AS FAST AS POSSIBLE (as long as its only 1 at a time)
Only things that can insert a single item at a time, like the hopper, or the plain basic untouched cyclic cables, will work to insert. The problem is the mod's own item cables have the ability to buffer and then trying to send an itemstack >1 and thus are rejected, and buffer more, you see where its going. Only breaking the pipe will reset it.
Not that it is going to ever get fixed in SF4, but I figured out the root cause, and its on the cyclic side.
The Cyclic author changed the code (somewhere between 1.19.8 and 1.19.11) to only allow "1 item per slot" in the user's inventory, "for balance", and due to a slight malformed bit of logic, when new ItemStacks are inserted, if they have a quantity >1 they are just outright rejected.
Despite saying "you can still insert as fast as possible" in the changelog, this isnt entirely true. You have to MAJORLY slow your roll to get it to accept items. AS FAST AS POSSIBLE (as long as its only 1 at a time)
Only things that can insert a single item at a time, like the hopper, or the plain basic untouched cyclic cables, will work to insert. The problem is the mod's own item cables have the ability to buffer and then trying to send an itemstack >1 and thus are rejected, and buffer more, you see where its going. Only breaking the pipe will reset it.
I found a workaround in SkyFactory 4, not sure if it works with other modpacks. using integrated tunnels you can use an item importer and item interface on a logic cable connecting the chest and automated user and set the item importer to do one item at a time. This is insanely fast while working perfectly