Not getting RP reward
Players are getting the supply signal but no RP from ServerRewards.  Here si the config for that part ...

{
  "Commands": {
    "oxidegrantgroup": "oxide.usergroup add {playerid} {value}",
    "oxidegrantperm": "oxide.grant user {playerid} {value}",
    "oxiderevokegroup": "oxide.usergroup remove {playerid} {value}",
    "oxiderevokeperm": "oxide.revoke user {playerid} {value}",
    "rp": "sr add {playerid} {value}",
    "tempaddgroup": "addgroup {playerid} {value} {value2}",
    "tempgrantperm": "grantperm {playerid} {value} {value2}",
    "zlvl-*": "zl.lvl {playerid} * +{value}",
    "zlvl-c": "zl.lvl {playerid} C +{value}",
    "zlvl-m": "zl.lvl {playerid} M +{value}",
    "zlvl-s": "zl.lvl {playerid} S +{value}",
    "zlvl-wc": "zl.lvl {playerid} WC +{value}"
  },
  "Discord": {
    "Discord webhook (URL)": "",
    "DiscordMessage Enabled (true / false)": "false",
    "Enable @here alert (true / false)": "false",
    "Title": "Vote"
  },
  "Rewards": {
    "@": [
      "supply.signal: 1",
      "zlvl-*: 1",
	  "rp 50"
    ],
    "first": [
      "rp 50"
    ],
    "vote4": [
      "rp 60"
    ],
    "vote6": [
      "rp 70"
    ],
    "vote8": [
      "rp 80"
    ],
    "vote10": [
      "rp 90"
    ],
    "vote12": [
      "rp 100"
    ],
    "vote14": [
      "rp 110"
    ],
    "vote16": [
      "rp 120"
    ],
    "vote18": [
      "rp 150"
    ],
    "vote20": [
      "rp: 200",
      "clatter.helmet: 1"
    ],
    "vote30": [
      "rp 300",
      "scientistsuit_heavy: 1"
    ],
    "vote40": [
      "rp 500",
      "electric.generator.small: 1"
    ]
  },​

Did you ever get this figured out? 

I've tried "rp: xxx" and it doesn't seem to reward them the RP. Yet if I do @what ever is within that is rewarded (currently it's just zlvl)