Shopify has started a callback service to handle support requests. You can refer to this thread for more info.
Due to COVID and limited availability of staff, you might not find a slot to book a callback. In such a case I can suggest a few other alternatives get support:
1. Try sending a DM on their twitter handle. Shopify has a dedicated support twitter handle and I can see that they are active there. https://twitter.com/ShopifySupport
2. You can share your problem in the community forum. Fellow community members / Shopify community managers can help you find a solution.
3. You can also take a look at their help docs and see if there's a relevant blog for your issue.
I hope you get a solution soon. Have a great weekend!