Hello,

1. Can you please share the page URL where these words are showing on the frontend?

2. You can change it from the Loco >> Plugins >> Woocommerce >> Edit the translation file:
http://testcassiel.neetrino.com/wp-admin/admin.php?path=languages%2Fplugins%2Fwoocommerce-hy.po&bundle=woocommerce%2Fwoocommerce.php&domain=woocommerce&page=loco-plugin&action=file-edit

3. You can easily change this text from Theme Settings >> My Account >> Login/Register >> Change the Register Text: https://ibb.co/1LbFPkp

4. You can easily change it from Woocommerce >> Settings >> Payments >> Edit the Cash on Delivery payment method >> Change the text: https://ibb.co/PckXqVC

Best Regards.