This will probably be of limited usefulness, but some people were asking about the export file. All it contains is favorites, filters, and a list of all your subreddits. Once you import it into wefwef, you can then click on each sub to get a list of similar communities which you can then manually subscribe to, one-by-one.

If you can get a list of your subs, you can create your own file to import into wefwef. On desktop you can highlight/copy all the subs from the sidebar.

Tip: ask ChatGPT to format the list for you if you can't write a macro:

Below is a list of my subreddits. Please format like this (remove the "r/"): "gaming","pics"

Subreddit Icon
r/AdviceAnimals
Subreddit Icon
r/AnarchyChess
Subreddit Icon
r/announcements
Subreddit Icon
r/apexlegends
Subreddit Icon
r/arresteddevelopment
Subreddit Icon
r/AskReddit
Subreddit Icon
r/askscience
Subreddit Icon
r/AteTheOnion
Subreddit Icon
r/aww

***
Here is the formatted list of your subreddits:

"gaming","pics","AdviceAnimals","AnarchyChess","announcements","apexlegends","arresteddevelopment","AskReddit","askscience","AteTheOnion","aww"

Below are the entire contents of the json file (with most subs removed so you can add your own). I didn't have any filters. Copy this into a text file and save it with the extension ".json", and import into wefwef.

{"global":{"favorites":["pics","gaming"],"keyword_filters":[],"distance_scrolled_meters":0},"Your_Name":{"subscribed_subreddits":["videos","movies","technology","todayilearned","gaming","pics"],"subreddit_filters":[]}}