Letter of Recommendation not on Letter Head

Stage 1
1

One of my recommendation letters did not come with a letter head. Can I still use it without getting any issues?

I read somewhere on tech nation guide that you can include the company’s logo on the letter. Does it mean you can put the logo on top of the letter like a letter head or at the bottom of the letter (maybe close to the signature)?

Please guys advise me.

2

Having a company letter head isn’t required for these letters
“and the organisation’s logo and registered address, if applicable” (bold mine)

3

Thank you for your help.