Small brown bumps on plant are the insect called Scale

Dear Judy, I love your site and need your help.
Some years ago I planted this plant out of a seed, but I don’t recall exactly what it was, could be a grapefruit, lemon or papaya, my mom thinks is from the citrus family judging by the leaves. The leaves produce a sticky liquid that stays on them like small water drops. The plant developed some brown capsules on older leaves and stems, a lot of them. They don’t move, but still, are these pests? if so, should I try to dislodge them with a little sharp object or treat them with some substance?
Here are some photos. I hope you can help me.

Warm greetings,

Hi Anca,

Your plant has a plant pest called Scale.

Soft Brown Scale is the most common scale that attacks indoor houseplants especially ficus, ivy, spider plants, ferns, aralia, and schefflera. It appears as small bumpy brown spots. As the scale sucks on the sap of the plant it secretes a sticky substance called honeydew. Because of the shell-like exterior, sprays are only partially effective against scale. Wipe off the lines of brown oval bumps with your finger, a cloth, or a child’s toothbrush then spray the plant with Neem Oil.