XLS/DOC/TXT formats not supported?

Problem/Motivation

After installing the module I cannot export to Excel anymore. This worked well in D7, but not in D10.3.2

Project home says these formats are supported:

• Microsoft XLS (or really simple HTML understood by Excel)
• Microsoft DOC
• Basic TXT

But views shows only:

Accepted request formats
 csv
 json
 xml

Whats is wrong here? If it does not work, can you update the project homepage, please?

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes