moneybutton is legal?

[Amirofski]

<!-- This line should go where you want to put your button -->
<div class="money-button"
  data-to="11410"
  data-amount="500000"
  data-currency="USD"
  data-label=""
  data-client-identifier="47a0ad30e8b908f86702c42f41607190"
  data-button-id="1571351189610"
  data-button-data="{}"
  data-type="tip"
></div>
<!-- This line can go anywhere -->
<script src="https://www.moneybutton.com/moneybutton.js"></script>

Code:

<!-- This line should go where you want to put your button -->
<div class="money-button"
  data-to="11410"
  data-amount="500000"
  data-currency="USD"
  data-label=""
  data-client-identifier="47a0ad30e8b908f86702c42f41607190"
  data-button-id="1571351189610"
  data-button-data="{}"
  data-type="tip"
></div>
<!-- This line can go anywhere -->
<script src="https://www.moneybutton.com/moneybutton.js"></script>

BTC

[LeGaulois]

(You posted in the wrong board.)

Yes, it's "legal" the website is just an Html code generator to accept fiat/crypto payments. I guess you wanted to mean "safe", in that case, I would say yes as well but there are more popular alternatives too. I know they have a Wordpress plugin in the directory and perhaps the code is even open source.

Edit:
I checked and the code is open source
https://github.com/moneybutton
its WP plugin https://wordpress.org/plugins/simple-money-button/
And here is an article mentioning it news.bitcoin.com/test-driving-the-money-button-simple-enough-for-a-9-year-old
(bitcoin.com link, forgive me )