Your comments
For Airbnb you can use the Get Reviews > Airbnb or the Review Funnel. Below is what it would like for each.
Get Reviews > Airbnb:
The first box can be any name. The second the URL.
Review Funnel:
Again the first box can be any unique name. It's usually the name of the location. It could be Haus Schneeberg, Hochkeil. Whatever you want to use.
TripAvisor reviews work the same way as Airbnb reviews. You can use the Get Reivews > TripAdvisor or if you want to download all of them then use the Review Funnel.
If I remember correctly, there isn't a limit on the amount of text you put into the Before line. You can also use some html in that line. For example, this would make a space...
Sorry, there isn't a way to add a logic function to a custom input at this time.
You can create a "Leave a Review" button then when they click it a window pops-up giving them a choice of where to leave a review. You can also make sure it's positive before showing the choices by first asking them for a rating. If it's positive then you show the links, if negative you show them a feedback form. This can be done with the Forms tab in the plugin.
If you just want to show a simple button, then you can do this with standard WordPress editing tools. Go to this page to figure out your Google link...
https://support.google.com/business/answer/7035772?hl=en
Then just create a button with the WordPress editor and link to the URL for your Google reviews. If you are on the latest version of WordPress you can use the Block editor to create a button in a Widget area.
Otherwise, I'm sure there are lots of button plugins or you could just use some regular HTML.
https://stackoverflow.com/questions/2906582/how-to-create-an-html-button-that-acts-like-a-link
Customer support service by UserEcho
That's strange. It looks like the reviews may already be on the Review List page of the plugin. Can you check?
Keep in mind that the Get Reviews >Airbnb and the Get Reviews > TripAdvisor pages can't download all of your reviews, only your most recent. If you need all of them then you have to use the Review Funnel.