We recently sold our Parents house as they have now both passed away.
Myself and my Brother were executors and had a solicitor deal with everything to deal with probate and the sale.
They only contacted me or my brother, they did not contact my other siblings to tell them about offers, exchange or completion, we let them know about offers etc as even though we could decide without them we thought it only fair to involve them.
If they only have your brother as a contact they will only contact him and expect him to pass on any information - they will not know the family dynamics.
Have the solicitors been contacting you about other issues, do they have your contact details.
Who instructed them and who was their contact.
As a beneficiary they will contact you by letter to ask for proof of who you are and your bank details to pay the money.
The more the solicitor does the more it costs.
Did your Parents appoint them as executors because of the family dynamics and is your brother the oldest / golden child so they gave his contact details ?
Sorry for your loss 💐