I don't use those, do use cloudflare, but i've checked the http access records and can see it coming through ok, just a constant loop of the below
"GET /admin/?app=core&module=customization&controller=themes&do=import&file=/tmp/IPSzqShJs&key=16593e44c0f3ca4a4206f7cf645ce547&id=11&csrfKey=77352b269e0c21d13312cdd6ef735fad&mr=10&csrfKey=77352b269e0c21d13312cdd6ef735fad HTTP/2.0" 200 49 "/admin/?app=core&module=customization&controller=themes&do=import&file=/tmp/IPSzqShJs&key=16593e44c0f3ca4a4206f7cf645ce547&id=11&csrfKey=77352b269e0c21d13312cdd6ef735fad" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36"