I've never had issues in the past connecting to my Oanda demo account via Zorro, however, when I've been trying to connect recently I am getting an error.

In order to try with some clean settings, I created a new sub-account, re-generated the API token, and then used these details in the User ID / Password Boxes. I have selected Demo as the account type, and am using the Oanda V20 option in the dropdown.

Still no luck, and getting the attached message, which would indicate something wrong on the Oanda side (due to ! at the start of the message) - is anyone else getting this from them too?

I had been testing with 2.35 however just to rule out that this was causing the issue I've reverted back to 2.30 however no change.

I have the same problem with my Zorro S subscription and Oanda. I suddenly cannot connect to my demo account and get the same message "Invalid Access Token". I was hoping it was a temporary Oanda maintenance problem but its been a while now so I am suspecting yet another Zorro problem. I am glad you posted this issue. I was pulling my hair out!!

Ah, interesting! Well, as they say, a problem shared is a problem halved

Could anyone confirm if other broker connections for demo accounts are working as expected, as I have a couple of strategies that I'd like to forward test, so if needed I could sign up with someone else for now.

@Zorro Team: can you also advise if the Oanda demo connection is a known bug on this side, or if we should chase Oanda to look into this on theirs?

For what it's worth, here Zorro also suddenly stopped connecting to Oanda demo, with the same error message. Oanda live works. Also, Python connection via oandapyV20 works on live and on demo.

=> Looks like something is acting up specifically between Zorro and Oanda fxPractice.

I forgot to mention that my backup trading system uses the Oanda REST V20 as a direct connect. I use the same API token as my Zorro strategies and it connects fine. There are no problems with the direct connection. It is written in NodeJS. This is REALLY BAD!!

I am experiencing the same thing...same error message. Live account is not a problem to get in. Started yesterday afternoon EST. Currently in conversation with someone at Oanda to determine if it is on their end or Zorro. I am using Zorro 2.25 by the way.

Does anyone know how to view the commands being sent via the Oanda plugin?

I've just realised that a fairly simple workaround to this Oanda plugin is to use the MT4/MT5 bridge and connect to a demo Oanda account in MetaTrader.

It's a little bit more faff as I need to also run this application in the background, and there could be some limitations vs. the direct API, but at least I can start forward testing my strategy and see how it gets on.

Anyway, I'm sure others have already utilised this approach but figured it was worth sharing on the off-chance it could help someone else.

it appears Zorro's API integration with Oanda is broken. likely because it can't/isn't following redirects
one can run zorro -diag to get diagnostic info
Zorro Diag.txt
script compiling............................
Functions..
Load 0 D:\Zorro\Zorro_FX\Plugin\Oanda.dll
Login Oanda V20 0->2
Login 0 Oanda V20..
BrokerLogin
HTTP: https://api-fxpractice.oanda.com/v3/accounts,(null),Authorization: Bearer CORRECT-API-KEY
!invalid access token? : 0 1399.663600 ms
Can't connect!
Raus
Neural
Close files

I can connect to oanda via APIs using curl and it works fine. It appears Oanda to returning HTTP redirects for the APIs.

Happens in v 2.30 and 2.35 beta.

Are Zorro folks/developers seeing messages in this forum OR how to contact them to fix it?

Yeah, It's $45 bucks to enter a support ticket. Otherwise, we have to wait until they get around to looking into this forum. I found it is good to have backup trading systems when it comes to this platform. It is the third day into this problem and still no official response from the engineering team. Hopefully, the reply number will keep increasing until it gets their attention.