Just made this post with the different link options, I think the third one might work for you. Could you try them and share which ones work?

https://lemmy.ca/post/9712488

Quoted below:

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There are a lot of different apps / frontends that can show stuff from Lemmy, and they vary in how well they support different link formats. Here is a short explainer:

Each entry below shows you what you should type (like this) and what you will see as a result (after the dash ‘-’).

For each entry, some apps will support it and others will not. It can be helpful to include a few different link formats so that everyone can use the link easily.

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NOTE: There is a bug on the Lemmy website right now. If you start typing a community or username, it will try to autocomplete it. DO NOT click that autocomplete, or it will mess up the link.

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!newToLemmy@lemmy.ca - !newToLemmy@lemmy.ca

• This is the universal format. If you click this link, the community will open in your home instance.
• This is the recommended method.
• If you are coming from Reddit, it is similar to how you could type /r/askReddit

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[you can put whatever here](/c/newToLemmy@lemmy.ca) - you can put whatever here

• This is another way to make a universal link. If you click this link, the community will open in your home instance.
• This works well if you can’t use the method above. For example, if you want to stick a link in a shields.io badge, you can use this technique to still include a universal link.

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lemmy.ca/c/newToLemmy - https://lemmy.ca/c/newToLemmy

• This is a hardcoded link. If you click this link, the community will open on a specific instance. Anyone using a different instance (ex. anything except lemmy.ca in this case) will not be able to subscribe right away, and they will need to redirect it first.
• Sometimes you can’t use the methods above. For example, if you want to create a nice thumbnail while promoting your community on !communityPromo@lemmy.ca, you will need to use this URL.
• If you use this method, try to use the other methods as well so people have options.