just tawk id is not enough. Last part of URL is important.

right now we can only set `tawkId`. This will generate this link:

```
'https://embed.tawk.to/' + key + '/default'
```

However, twak comes in the format of not `default` in the end. Ex:

```
'https://embed.tawk.to/' + key + '/' + second_important_argument
```