Error : This browser requires HTTPS to use the web vault


I’ve been trying to self host a vaultwarden server in docker on my Synology DS918+.
I’ve followed and doubled check the setup but I can’t figure out what’s wrong with it.

Thanks in advance for anybody who would take the time to take a look and help, it’ll be much appreciated.

Here is my setup :

1- I’ve created a certificate with LetsEncrypt via the Synology webui.
2- I’ve created a DDNS via the Synology webui.
3- I’ve created and setup a docker container from the vaultwarden server image. I’ve used the port 8880.
4- I’ve setup a reverse proxy using port 8880.
5- I’ve forwarded port 80 and 443 on my routeur towards my nas local ip.
6- I’ve restarded everything.
7- I can access vaultwarden but when I try to create an account I’ve got his error message.

Thanks a lot !

Found the issue, I was using thinking that the reverse proxy would actually redirects it into https://
Using fixed the issue.