Legally only the signs for the particular bay count, signs on the other side of the road or for a different bay on the same side of the road don't count, you know for next time.
Here's something you can use if we don't get the suspension logs back before the deadline:
Dear London Borough of Waltham Forest,
I would like to challenge liability for PCN FR61970085 because the alleged contravention did not occur. It appears not all signs within the vicinity of my vehicle were carrying a parking suspension sign, and I believe this partly contributed to the fact that I missed the suspension.
Furthermore I contend there has been a procedural impropriety, as the information sheet I was given does not correctly reflect the provisions of The Removal and Disposal of Vehicles Regulations 1986 as amended by The Civil Enforcement of Moving Traffic Contraventions Designations and Miscellaneous Amendments Order 2022, which in turn is a failure to comply with regulation 11(2)(a) of The Civil Enforcement of Road Traffic Contraventions (Representations and Appeals) (England) Regulations 2022.
In light of the above the penalty charge must be cancelled.
Yours faithfully,