Why am I not buidling muscle?

Hello, I am a 38 year old male 5'8".

I lost a lot of weight prior to 2017 from 210lb to 118lb & became very skinny. I started at the beginning of 2017 weight lifting & clean bulking. I first started following a 3 day full body routine which I didnt enjoy as I am not too bothered about strength, I am more concerned with aesthetics & body building. So around 12 weeks ago I started the PHAT routine which I absolutely love.I have been gaining weight each week & I have put on a lot of fat. I have been told that I appear to of just put on fat which I do believe to certain point.

All my lifts have been progressing with either weight / reps or sets. My arms have grown over 1.5" over this year & my arms are still really lean. This is my progress pics:

https://imgur.com/1QQRBga
https://imgur.com/2wd3Nu0
https://imgur.com/TNqHzL9

My lifts over the last 8 months:

Bench 45kg > 72.5kg

Pendlay 40kg > 79kg

Squat 30kg > 65kg

Deadlift 50kg > 110kg

Chinups BW x 3x5

45° Leg Press 20kg > 125kg

Incline DB Press 14kg > 26kg

DB Shoulder Press 10kg > 22kg

EZ Bar Curl 15kg > 27.5kg

Seated Row 66kg > 86kg

T Bar Row 60kg > 77.5kg

Also I keep track of my body measurements, & these are lean parts of my body:

Chest: 100cm > 110cm

Arms: 42.5cm > 37cm

Thighs: 51cm > 58cm

Neck 39cm > 41cm

I train 5 days a week for approx 2 hours. I eat 2700 cals with 180g Protein.

I am becoming really disheartened because I am truly dedicated but people are saying I am not building muscle.

Any advice would be really appreciated. Thanks.

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