eSIM

Is it a different carrier from the carrier of your nanoSIM?

If so, your phone may be “Carrier Locked” to it’s original subsidizing carrier.

Also, be aware that an iPhone can only support a single CDMA carrier at one time.

See this and more here:

Using Dual SIM with an eSIM - Apple Support

Often when you purchase a phone from a carrier, the phone is “locked” so as to work ONLY with that carrier.

This is generally known as “Carrier Locked.”

The locking carrier may - or may not - be willing to release their lock; or it may be tied to a certain length of service commitment.

See:

How to unlock your iPhone for use with a different carrier - Apple Support

This is Apple’s guidance on the matter:

About eSIM on iPhone - Apple Support

HOWEVER, different carriers implement eSIM provisioning differently.

This can be due to their own hardware, software, procedural standardization, or account security considerations.

Don’t get frustrated if you can’t make it work by yourself; rather, contact your carrier.

In that article you highlighted a portion of one of several possible methods a carrier might use to provision your eSIM.

Did you obtain a QR code directly fron your carrier? (you can’t just scan “any ol’ eSIM QR code)

After you scan a QR code, NUMEROUS complex events occur in your carrier’s provisioning system before the eSIM is “pushed-out” to your phone. (i.e. there are numerous technical pieces which ALL must work to complete the provisioning - your phone is only one “piece” of it)

Again, contact your carrier.

Also and somewhat unfortunately … posting images with - what I think are Cyrillic characters - is generally not helpful in this english-language community. Sorry. 🙁

You’ll need to contact your carrier to resolve.

Well, if there’s no such problem, your chosen carrier should be able to get your eSIM working.

There’s really no “part” for Apple to play in the effort.