i had removed the buffers the silo was supposed to pull from and basically noticed it won't even pull from providers... just didn't seem to work at all anymore. so i set up a 2. silo up with requesters, and since it worked with requesters the request would even be propagated to my crafters. sadly, it took me way too long to figure out i had to send one rocket manually... it took me hours to give up trying to get it to autolaunch... and finally when i had given up and send it manually and the silo send the next rocket automatically, i was like... i don't know, it took some time to shake it off...
then later the 1. silo started working again after i created my 3rd platform. to my surprise the 1. silo immediately requested the platform starter pack from a provider and then continued to work as i'd expect it, so now i got 2 working silos.
sadly, the game is running 24/7 and it was fixed before i went to sleep, not even my pre-sleep save still has the bug, so i guess the saves are long gone...
but i'm trying to relax a bit xD 2.0 and dlc just dropped and i think it's the first bug i've ever encountered in factorio and that and some strange decisions concerning signals are rly the first issues i have with the game and i played early access and after actively for hundreds of hours.