Do devotees get influenced by the three modes of material nature?

ANSWER by HH Bhakti Vikāsa Swami:

“Do devotees get influenced by the three material modes of nature? Well, do you? You are a devotee. Do you get influenced? 
Sometimes. You are doing better than most of us.

māṁ ca yo 'vyabhicāreṇa
bhakti-yogena sevate
sa guṇān samatītyaitān
brahma-bhūyāya kalpate

Kṛṣṇa says: “One who engages in unflinching, unalloyed … ” 
What’s the word Prabhupāda uses?

“Undistracted devotional service to Me transcends the modes of material nature, becomes completely fixed on the transcendental platform.” Unalloyed. “One who engages in My unalloyed devotional service.” (BG 14.26)

So, yeah. We are also influenced by the modes of material nature, but we should practise Kṛṣṇa consciousness very seriously and then gradually we will become free from that influence.”